"The reason that we're not making a Wii U-version of Castlevania: Lords of Shadow 2 is because of our resources. We have a limited amount of people working on the title. About 60 people worked on the first title and that's a pretty small team. With the sequel we have slightly expanded that team, but in order to make a Wii U-version, we need about 20 to 30 extra people. Next to that, we're already pretty far into the development of Lords of Shadow 2, so it would be very hard for us to work on a Wii U-version without negatively effecting the general development of the title. That's the only reason there won't be a Wii U-version, it's not that we don't want to make it, it's just that it wouldn't make sense for us to do so right now." - David Cox, producer
Now those are arguments I can completely understand. Would be nice if we could get a special edition of the game at a later date, but as for right now, the explanation makes perfect sense. Thanks to Ilovegamesforever for the heads up!