The latest word I've found is by Nico and Darren on the reddit post about the announcement:
http://www.reddit.com/r/totalwar/com...pj7g?context=4
EDIT: Should be available on the 25th of June. We'll let you know if that date changesBoth games will now support wide-screen, high resolution (16:9 & 4:3), Windows 7 & 8 if purchased through Steam.