What would they change it to though? They're absolutely not going to remove the "Wii" part. The old rumours about "Super Wii" and such are interesting, but I dunno. I think they'll just stick with what they have.
I wouldn't be surprised either way. Nintendo is known for Code Names and console name changes after all:
The Wii was given a final name a mere 8 months before release. Same thing with the Nintendo 64. Heck, the Nintendo 64 had one Code Name (Project Reality) and two "Final Names" (Ultra 64 and then Nintendo 64).
There are rumors for both namechanges. There's even a rumor that says Iwata had trouble pronouncing the name Revolution.
Whatever the case, we will know the truth soon enough. I highly doubt they would change the name after E3, though. So whatever name it has during E3 will more than likely be the official one.