^Hm, I don't know. I really think they want to save it for E3. IF it will come. No-one said it would, it was just a rumour... If they are not going to call it Wii Something, then I also think they should revamp the looks.
The 26th would be a great time to announce a name change. It'll generate some more hype in the time leading up to E3, maybe even sway the opinions of some PS3/360 owners who are skeptical about buying a console with the Wii name on it. Remember, the Revolution name change to Wii was announced around this time in 2006 too.