Gamerace on 29 August 2008
I'm sure Nintendo was working on WM+ long before rumours of Darwin popped up. For one Nintendo is very familiar with the competition stealing their ideas (at least the good ones) and would have expected imitation by now.
However, I am fairly certain Nintendo showing off WM+ and especially releasing a press release on it hours prior to MS's showing at E3 was directly related to Darwin rumours.
