The most radical of innovations has been made to the One M8's camera. Two cameras mounted on its metal back work in tandem to separate the foreground from the background in photos. This feature, called DuoCamera' by HTC, makes it possible to refocus objects in images after they have been taken.
Photos still retain the 4MP resolution and the sensitivity to light achieved by the company's Ultrapixel sensor technology. The DuoCamera can only record videos in Full HD (1080p) and not Ultra HD resolution, unlike the rivalling Samsung Galaxy S5, but the limited support for UHD, coupled with the new format's high storage requirements, means most people won't notice its omission.
Gone is the 2 megaixel front camera of the M7. In its place is a vastly improved 5 megapixel camera ideal for self photography and Skype video calls.
More volume is delivered by the company's improved BoomSound speakers. HTC's product manager Darren Sng told Good Gear Guide that the HTC One M8 delivers 25 per cent more volume, despite HTC breaking its affiliation with Beats Audio.
More powerful, more beautiful
Almost 90 per cent of the HTC One M8 is made from metal. The company has increased the curvature of the smartphone's spine for an improved feel and has recessed the edging with the use of diamond polish. The result is a smartphone distinguished by premium build quality.
HTC has increased the size of its screen to 5-inches, and the One M8 still features Full HD (1920x1080) resolution. The resulting density is 441 pixels-per-inch (ppi), which puts its pixel density fractionally ahead of the 432ppi achieved by Samsung's Galaxy S5.
Powering the new M8 is a quicker 2.5GHz quad-core CPU, 2GB of RAM and, in Australia, 16GB of internal storage. A noticeable improvement is compatibility with a 128GB microSD card.
The HTC One M8 supports 4G networks and is equipped with a non-removable 2600 milliamp-hour battery. HTC's Sng claims the One M8's battery can outlast that of the older One M7 by 40 per cent, and that a new extreme power saving' mode see the M8 last 10 days in standby from a full charge.
When can I buy it?
HTC has confirmed the new One M8 will go on sale in Australia in April. The One M8 will be available in Gun Metal Gray and Glazier Silver at launch. An Amber Gold version of the smartphone could be launched at a later date.