Reckon we won't see it till July, and after the WC final at that. Nike will want to be marketing their national team shirts to the max, and they have a lot of them in the tournament.
Mmm, not all kits, I believe United this season have a white away/third shirt which they've had for 2 seasons, pretty sure a few others have done the same with away/third shirts. Probably right about home kits though.
There is another site that shows all teams home, away and third, from all...