Apple has announced the new iPad Pro at today's Hey Siri, Give Us A Hint event. This is the largest iOS device yet, sporting a 12.9-inch display with a 2732x2048 resolution - that equates to 5.6 million pixels, which is more than even the 15-inch MacBook Pro with Retina display. In fact, as Apple points out, the length of the iPad Pro display when in landscape orientation is equal to that of two iPad Airs side-by-side. What that means is that you can run two full-sized standard iPad apps on the iPad Pro simultaneously, side-by-side.
As for ports, the iPad Pro has the standard Lightning connector that we're all used to for charging and syncing. Additionally, it has a new connector called the Smart Connector. This allows you to attach the new Apple Smart Keyboard.
The iPad Air Pro also sports a four speaker array. Two stereo speakers on the top, and two more on the bottom. Depending on the orientation and how you are holding the iPad, it will change the dynamics of the sound to optimize it for that specific scenario. Apple says that the iPad Pro at full volume is three times louder than the iPad Air 2 at full volume. This is been a big complaint with iPad in the past, since it was never great with sound.