The extra 25 missions and 4 costumes are
not exclusive to XB360/PS3.
In fact, Wii U owners are getting them
first. There will be a
FREE update for the Wii U version at the end of this month (date is for Japan, other countries may be later), which will include the 25 new missions and the 4 new costumes.
http://www.gamecity.ne.jp/ng3re/features2.htm