Nvidia is really proud of the Tegra 2, and for good reason. It is the first dual-core processor to be powering mobile devices and had a huge coming out party at CES this year. It looks poised to become the default processor for Gingerbread tablets as well. The biggest benefactor of much of that power will be games, and Nvidia isn't going to let Google handle things on their own. As such, the company will be launching "TegraZone", an app store for games that require the increased graphical performance of the Tegra 2.
There are also a couple key advantages for game developers to use TegraZone over the Android Market including doing away with the 50MB app size limit and offering a more curated and premium catalogue -- game devs won't have to worry about competing with lower-quality games. Nvidia claims 5-10 launch titles and is actively courting Gameloft, whose refusal to list their games on the Android Market has become somewhat famous. As for release date, we only get a cruel "coming soon". [Nvidia]