As for the video player we had to stick to MP4 format and nothing larger than the screen's resolution -- the standard iPod video settings worked like a charm (we had 900kbps and 30fps encoded by Xvid).
We're told to expect an oleophobic Gorilla Glass screen with a standard XGA (1024 x 768) resolution, options for 16GB, 32GB or 64GB of storage, optional WWAN, an accelerometer, gyroscope, light sensor, microphone and a battery that'll last for around eight hours in ideal circumstances.
Its screenresolution is 720p, but the machine is capable of playing out games and video in the 4k standard - which offers eight times the detail - on compatible TVs via an HDMI cable.