This might be a telling sign for PlayBook OS 2.0 launching. Quite a few large development shops like Rovio and others have been updating their games this week. NerdBerry noticed that Gameloft has now joined the club by updating their Lets Golf 2 HD, NOVA 2 HD, and UNO HD games to v2.0 from v1.0. Some of their games are still sitting at v1.0 so it could be they are waiting to be approved.
If you happen to own one of those games check out the updates in App World