The Wii U's eShop for downloading games just went live in the US. This thing has a lot more games in it than I'd expected. You've got full-sized launch games, from New Super Mario Bros. Wii U to Assassin's Creed III, several indies, including Little Inferno, Mighty Switch Force: Hyper Drive Edition, Nano Assault neo and Chasing Aurora.
There is a coming soon area that lists games such as Batman: Arkham City and Mass Effect 3. There is no Virtual Console area now/yet. There is an option to add games to a Wish List, but it's not clear if others can gift games to you.
Prices on games appear to rang from $US9.99-$US59.99. Some game listings, such as Assassin's Creed III's, include a warning that they can't be downloaded to the basic 8GB Wii U and require an extra hard drive.
More as we discover it.