I'm actually the guy that submitted this story and spoke to Mr. TenNapel, so I'll clear some things up.
- Mr. TenNapel didn't actually comment on the animated series. He just said that the feature film was dead.
- He specifically named Wii as the platform for EWJ4, after commenting on how Interplay wanted to do a quick-and-dirty release to make some fast cash; Mr. TenNapel objected to this and only agreed to move the project forward if it was given proper treatment. That was when he mentioned Wii as the planned system.
- Could he have meant WiiWare? Maybe, but his insistence on doing a proper game with Interplay seems to negate that possibility.
- No mention of style (3D, 2.5D, etc.) was made.
- No mention of whether the game was in production or the planning stage was made, either. This could be a 2012 release for all we know.
Hope that clarifies some stuff.