DK is for people that are good at platformers, Mario is for everyone... which is why I personally prefer the latter by a wide margin
That aside, I'm not sure if we'll see any more of DK this year apart rom the Mario vs Donkey Kong remake. Maybe some VC-release, DK64 seems overdue. Mainly because I'm just not sure who would have developed a new game coming out this year, Retro is busy with Prime 4, the one Mario team just released Wonder and the other was probably busy to get a new 3D Mario out around launch of the new console. Maybe some wild card... or we're getting a new 3D DK for launch window of the new console