Have FFG said anything about if the Imperial Assault Dice be added to the SW Dice App?

I don't think they've made an official announcement, but so far every other SW-themed dice option has been added to the app, so it's a good bet that Imperial Assault dice will be added too.

Furthermore, several FFG employees (including vice president Steve Horvath) have repeatedly said how extremely excited they are for IA, so I can't imagine the dice NOT being added, with that much excitement brewing around the company that owns the app in question.

But I won't try to tell you the odds.