It's only been a couple weeks since Apple relaxed their app guidelines, and two native iPhone apps that were once taken out of the App Store have been re-included. These two apps are ones that users can use with their Google Voice account (GV Connect and GV Mobile+) -- both of which are unofficial.
Around the same time those two apps were initially removed from the App Store, Google had been trying to get their own app approved. That didn't go anywhere -- Apple didn't approve or deny it. The official Google Voice app has been sitting in limbo ever since.
With these old apps being approved all of a sudden, I'm guessing the official app isn't going to be far behind. Since apps like these are making themselves into the App Store, there shouldn't be any legitimate reason for Apple to block Google's version of the same thing. What are your bets?