The two top improvements in the second Oculus rift are aimed to reduce the screen door effect by changing the display to a full 1080p OLED screen and the inclusion of Valve's low persistence of vision feature to reduce the image smearing that DK1 users reported.  There is a brand new way of tracking your heads position in 3D with the DK2, a camera tracks the motion of hidden onboard IR LEDs to track translational movement in addition to the rotational tracking existent on the DK1.  You will need 2 free USB ports and it connects to an HDMI or DVI port on your GPU, wireless video streaming is still a hurdle for many applications let alone the Oculus Rift.  Check out the comments on Slashdot and follow the link for a full preview.

"The hotly anticipated Oculus Rift DK2 has begun arriving at doorsteps. The DK2s enhancements include optical positional tracking and a higher resolution panel, up from 1280×800 to 1920×1080 (1080p) and moved to a pentile-matrix OLED panel for display duties. This means higher levels of resolvable detail and a much reduced screen door effect."

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