Fresh news out of GDC and it's pretty freaking cool.
Coming this spring, they are launching ProjectAnarchy, which is a bundling of their Vision game engine, Havok physics engine, AI engine and animation software... free for mobile platforms.
Still looking for more details, it's pretty sparse at this point. I don't really get what's in it for Havok.
All the same, if you are a mobile developer, having another Unity or UDK calibre development system... free... that's pretty awesome.