Tables are purchased piecemeal through the in-game store, tables including the stock game tables and DLC such as the Marvel Pinball series and the Plants vs. Zombies tie-in. The freshly minted Star Wars tables have not been announced for Nintendo platforms, so naturally there's no mention of them in the announcement.
Finally, we'd be remiss if we didn't mention that purchases on other platforms won't transfer over to the Wii U. Zen Studios offered cross-play on PS Vita and PS3, but since the 3DS and Wii U use different stores, transferring already established content from the handheld to the Wii U is impossible.
Zen Pinball 2 will be available for download on the Nintendo eShop on Wii U next Thursday, March 21, 2013 as a free platform download for all users, including free trials for each table and a huge library of exciting pinball tables for purchase, including the Super Hero themed Marvel Pinball™ series, and the zombie themed Plants vs. Zombies™ table.
Zen Pinball 2 on Wii U will release with a huge content library available, including three Marvel Pinball packs, a collection of Zen Studios' original designs, and several individual tables:
Zen Classic Pack featuring Tesla, El Dorado, V12, Shaman
Marvel Pinball featuring Spider-Man, Wolverine, Blade and Iron Man
Marvel Pinball: Avengers Chronicles featuring Marvel's The Avengers, Infinity Gauntlet, World War Hulk, Fear Itself
Marvel Pinball: Vengeance and Virtue featuring X-Men, Thor, Ghost Rider, Moon Knight
Individual DLC Tables: Excalibur, Earth Defense, Sorcerer's Lair, Paranormal, Mars, Epic Quest, Plants vs. Zombies, Fantastic Four, Captain America, Civil War
Please visit the Zen Studios Press Center for assets and further information.