Apple, advertising AirPlay Mirroring in Mounain Lion:
AirPlay Mirroring sends a video stream automatically optimized for the HD capabilities of your Mac and Apple TV. It supports up to 1080p HD.
It's funny to me how the 1080p standard is called "High Definition". It isn't by any kind of measure anymore. And don't forget all the HD and HD Ready naming mess. What's next? Ultra High Definition branded Super Hi-Vision – already two names in the run again.
I applaud Apple for creating a good definition for Retina that will stand the test of time, and not be hillarious in the forseeable future: Displays where your eye can't distinguish individual pixels from an expected normal Viewing distance.