Not wanting to pour water on a year "dedicated" to Rare, but from Microsoft's track record, any "celebration" of Rare they try will be apocalyptically embarrassing and downright painful:
On another thread in this board, the Conker "celebration" has been unveiled as some DLC for Project Spark. Whoop-de-doo.
This week, Banjo-Kazooie was brought back seven years (SEVEN!) after Nuts & Bolts flopped... in a Kinect tech demo which will never be seen or played outside of that single gaming conference. Considering how Microsoft isn't even pushing the Kinect any more, that's particularly weak.
Aside from that, I think the Battletoads are in the Xbox version of Shovel Knight and... that's it.