Square Enix has given a status update for the iPhone version of Final Fantasy Tactics: The War of the Lions on Facebook. It's been delayed ever so slightly -- to late July -- with the iPad version planned for release one month later.
If nothing else, you need to follow that link to see assistant producer Shiina apologizing. It's adorable. He's also included a brief Q&A in the post: game slowdown was addressed, autosave functionality is in, and the Retina display is supported.
Bummer, but these things happen.
Final Fantasy Tactics iOS Delayed [GamePro]