It's been a long time since last news, but luckily we gathered some new information about MDK 2 HD and the Wii version.
Trent Oster from Beamdog said : "We haven't posted anything on MDK2 HD as we're in the middle of a site re-design. Status-wise, We're just finishing up the Wii port of MDK2 in the next few days, then it is 100% on MDK2 HD. (We've already done some sweet things to the engine and it will only get better)."
Source : BioWare Social Network