When Zen announced the original release date for the Xbox One version — July 31 — the studio said the game would not offer cross-buy support for tables purchased on Xbox 360. At the time, a Microsoft representative told Polygon that it was working with Zen to make that happen. A couple of weeks later, Zen happily announced a reversal: Players would be able to import tables from Xbox 360, although the Xbox One version wouldn't be available until August.
Pinball FX2 on Xbox One is a free download, as it is on other platforms; customers buy individual tables or table packs from within the app. The Xbox One version includes the Sorcerer's Lair table for free. Most, not all, existing tables are available for importation from Xbox 360, but according to Zen, the studio will soon add support for the ones that can't be imported right now. Those include the four Marvel Pinball tables, as well as Earth Defense and Excalibur.
For more details on the import process, check out the FAQ on Zen's forums. You can also watch the launch trailer for Pinball FX2 on Xbox One above.