A 7 incher made by ASUS with a Hi Definition display and NVidia's Quad Core Tegra 3 on board. Runs the newly released Android 4.1 (Jelly Bean). Only $199 and shipping in 2-3 weeks.
Yes, it has been added to the 4.1 SDK.
My original concern was that all it could be used for was consumption (like the Kindle Fire). Turns out not to be the case - it is a real, full tablet.
I did a comprehensive review on this puppy in another thread:
http://www.gatefans.net/gforums/showthread.php/3933-First-Impressions-The-Nexus-7?highlight=nexus