Sony says the PS4 was designed with an overarching theme of a "frictionless and seamless" gaming experience.
We've known that the PS4 will track both the controller in a gamer's hand, as well as their face, since the console's launch in Feb. But during his GDC talk Norden revealed some interesting ways that this technology will be implemented in games.
For example, the old multiplayer standby of split screen, divvying up television real estate when two or more players go at it, will be aided by this tracking tech. If a gamer gets up and moves right or left, his section of the screen will automatically be swapped.
We learned a whole lot more when Sony gave its E3 presentation, so read on for all you need to know about the new PlayStation...
The PS4 itself was shown off for the first time at E3 and it's black, just like the Xbox One. However, it has an angular design and appears to be constructed of a similar plastic to the original PS3 Slim machine.
It looks as though it's slimmer than the Xbox One but we're not totally blown away by the design. What do you think?
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PS4 release date
The official PS4 release date is still only 'later this year'. Sony didn't reveal any more details on the release date at E3 so we're still in the dark. However, with Microsoft launching the Xbox One worldwide in November, it seems likely that Sony will be going live around this time also.
In late June, German and Dutch retail outlet Media Markt put up posters advertising the PS4 release date as Wednesday November 13, while Dutch site Bol.com also advertised the same on-sale date. That's two two weeks before the Xbox One release date.
Previously, Sony took out a newspaper ad in the UK, clearly advertising the PS4 release date as '2013'. That tallies with an interview in May with our buddies at CVG, a source inside Sony said that the company is pulling out all the stops to launch worldwide in 2013 and ensure that the PS4 is not trumped by the new Xbox.
Sony also advertised at the Champions League final at Wembley Stadium, London, with 'PS4 - coming 2013' signs.
Sony announced the PS4 price at E3 - it'll cost $399 in the US, £349 in the UK and €399 in Europe when it goes on sale later this year. That's a whole $100 cheaper than the Xbox One.
That price, it must be said, does not include the PS Eye camera, whereas the Xbox One will ship with the second version of Kinect.
There is also no online check-in requirement, and you'll be able to play games regardless of whether you're connected to the internet or not. The Xbox One requires an online check-in once every 24 hours and will lock you out of your games if this doesn't happen.
AMD's technology is coursing through this new system's veins. Sony revealed the system runs on a single-chip custom processor and utilises eight x86-64 AMD Jaguar CPU cores, with a next-gen AMD Radeon based graphics engine powering the way.
So it's very much a PC-based system then, which is great news for developers who will find it much easier to code games for the next gen consoles and for PCs. However, that CPU is hardly next-gen - it may have been modified for this system but the AMD Jaguar platform is by no means the fastest of its kind - indeed it's slower than Intel's fastest by orders of magnitude.
However, with fewer redundancies than a PC has, the PS4 will certainly be able to make use of every single Watt of power it draws. And the games we've seen so far certainly look impressive.
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The "highly enhanced PC GPU" is another AMD part - something along the lines of a Radeon 7850 card - and packs 18 GCN units. That may sound a like a lot of techy mumbo jumbo but what it essentially means is that the GPU packs 18 processing clusters, each packing up to 64 cores. That provides a lot of parallel processing power, and will thus handle the majority of the PS4's grunt work. It hits 1.84 TFLOPS of processing mojo. This is a far more powerful component than the Jaguar CPU and is may well have the edge on the integrated GPU inside the Xbox One.
The PS4 will also use GPU compute features to take advantage of the GPU's raw power - it'll be used for general computation tasks as well as making games shiny.
The PS4 will ship packing 8GB of GDDR5 memory. That's some super-fast stuff right there and should enable lightning fast performance.
Indeed, Sony has revealed that you will be able to power down the PS4 mid-game and then switch it on again in seconds and pick up right where you left off. That's the sort of loading power that this memory enables.
We're also looking at Blu-ray disk support plus good ol' DVD, plus HDMI output support as well as Analog-AV out and an optical digital output.
PlayStation 4 Eye
What's really grabbing though is the development of the PlayStation 4 Eye, a newly developed camera system that utilizes two high-sensitivity camera equipped with wide-angle lenses and 85-degree diagonal angle views.
Sony said the cameras (amounting to 1280 x 800 pixels) can cut out the image of a player from the background or differentiate between players in the background and foreground, enhancing game play handily. There's also mention of logging in using facial recognition and using voice and body movements to play games "more intuitively."
If you have an eye for details you may have noticed that the PS4's DualShock 4 controller has no Start or Select buttons. Norden confirmed this, saying that it will have a so-called Option button instead, as well as the much bandied about Share button on the rear.
The analogue sticks have been tightened up to be more precise, and the controller also features a brand new three-axis gyroscopic motion sensor with three-axis accelerometer which should be great for getting you immersed in the games. The camera continuously tracks all four controllers with precise accuracy. Rotational tracking is provided by the internal components and.
The controller has a two-point Vita-like touchpad on the front with a 1920x900 resolution, and a tactile clicking sound letting you know you've pressed it. The light bar on the front will glow different colours depending on whether you're player 1, 2, 3 or 4 and will be tracked by the new PS Eye camera. It also has an Xbox-style headset jack and a mono speaker inside it.
Video-watchers take note
This new PS4 controller won't accidentally fast forward when you set it down. Norden said this was one of the biggest complaints his team heard about the PS3's DualShock. The PS4's controller has triggers designed not to depress when set down. What's more, Norden even said he'd been dropping controllers without skipping a single frame.
That touchpad on the DualShock 4 will be capable of two simultaneous inputs. The light on the controller will glow blue, red, green or pink light, depending on whether you're player one, two, three or four.
The Share button
The PS4's ardware encoder always records the last several minutes of game play without using any additional resources from the game, by pressing the Share button you can then upload or save your gameplay and show your friends or keep it just for your own amusement.
DualShock 4 lightbar
The DualShock 4 controller, you will notice, carries a Move-like glowing light bar. This makes it possible for the PlayStation Camera to track the controller's position. This, it has been revealed, is a permanent fixture and cannot be turned off, so if you don't like controller-sourced mood lighting, think about getting a third party pad.
PS4 streaming lets you stream out live gameplay to your friends. This is all built into the hardware and does not need to be supported by developers. Users can react to the video by typing comments in real time. You can do this to friends, or public.
PS4 user interface
The XrossMediaBar (XMB) interface of PlayStations past has been completely ditched in the PS4, with Sony instead choosing to design a new OS that looks a lot more like that of the Xbox 360 than the PS3.
Will the PS4 be 4K capable?
In a chat with Kotaku, Sony has revealed that the PlayStation 4 will be able to playback 4K/Ultra HD video. However, it will not upscale to 4K or play games at 4K resolution.
Sony has also confirmed that it will definitely launch a 4K movie service on the PS4 and is looking at ways it can get around the 100GB downloads required.
The PS4 will definitely not offer native support for PS3 games. However, there will at some point be a service on the Sony Entertainment Network that offers server-side emulation and streaming of games from PS One classics right through to PS3 Platinum Editions.
Sony has confirmed that PlayStation Move will play a big part in the PS4 ecosystem. However, it has not yet been revealed whether the PS4 will launch alongside a new PS Eye camera and new Move controllers or whether the peripherals are staying the same with all the enhancements made console-side.
By tracking the light bar on the DualShock 4 pad and associating it with faces in the image, the game can identify which player face is connected to which game avatar. By using facial recognition the game can associate a face with a PSN profile.
High sensitivity, dual color cameras. Two cameras here.
1280x 800 12 bits/pixel, 60hz
Higher frame rates at lower resolutions
Wide angles – diagonal field of view is 85 degrees
3 axis acceeletromter, tilt sensor
Wide baseline 4 microphone array
Dedicated port, exclusive SCE connector
Game-loop sync can be changed, depending on framerate of game
PS4 Blu-ray drive
Not only will the PS4's 64-bit x86 architecture and 8GB of GDDR5 memory blow its predecessor out of the water, its Blu-ray drive will be three times faster.
"If you're coming from the PS3 you're probably quite used to the headache of having to split memory arhchitecture, you can't quite use all of it, the speeds are really wacky on some of it - we don't have that with PS4," said Norden.
He added that this would offer developers "crazy high bandwidth".
Synergy with PlayStation Vita
Sony has revealed that the PS4 will launch with the ability to stream games directly to your PS Vita. In exactly the same way as the Wii U allows you to switch off your TV and continue playing on the tablet controller, the PS4 will wirelessly send your games to the Vita.
There will be similar synergy between "all Sony devices" which means Xperia handsets and tablets, Bravia TVs and BD players.
Sony hinted that there will be more announcements in this area, too. We think the obvious next reveal in this area is the ability to play PS4 games on your Vita from any location using a wireless connection.
PS4 Instant On
The PS4 will be one nippy device if Sony is to be believed. It will have an instant on/off feature allowing your to shut down during a game and then boot up from scratch in seconds and resume where you left off. The days of waiting 60 seconds as your console loads up are about to end.
What's more, Chris Norden has stressed that Sony has three tenets of PS4 design: simple, social and immediate. Gamers will be able to start playing titles before they've even finished downloading.
And with one button sharing, Norden says the goal is to make it so simple users will "do it without thinking about it."
PS4 launch titles
A number of games have been revealed for the PS4. They Are: Deep Down (Capcom), Destiny (Bungie), Diablo III (Blizzard), Driveclub (Evolution Studios), Final Fantasy (Square Enix), Infamous: Second Son (Sucker Punch), Killzone: Shadow Fall (Guerilla Games), Knack (Sony), The Witcher 3: Wild Hunt (CD Projekt RED), Watch Dogs (Ubisoft).
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