What role he'll play is upin the air, but considering what we learned recently about every member of the cast playing multiple roles including opposing genders, that shouldn't come as a surprise. The film is an adaptation of David Mitchell's time hopping sci-fi novel, telling six nested stories spanning from the 19th century all the way into a far flung future dystopia. Tom Hanks, Halle Berry, Jim Sturgess, Ben Whishaw, Susan Sarandon, Bae Doona, and Jim Broadbent are set to star.
One of the reasons I think we've seen a little less of Grant lately is that younger actors who have sorta the same style and look have been cropping up. Two of those actors are in this film in Whishaw and Sturgess.
Filming kicks off soon, with a release date targeted for late 2012, possibly October.