The GPLv3 is quickly moving in.  If you remember, we polled the OpenLogic Expert Community back in April and they said that the GPLv3 would move in quickly:

• 71% would be in favor of some or all of these projects moving to GPLv3
• 77% thought that it would take a year or less for their projects to move to GPLv3 once the final version of GPLv3 was released

Looks like they were right.  Palamida recently published some numbers where they conclude that 39% of all active SourceForge projects have moved to the GPLv3.  Less than two months after the GPLv3 has released, over 5000 projects have moved explicitly to the GPLv3!

Note that I recommend that you always take statistics with a grain of salt.  Both our survey and the Palamida post explain how we got to our numbers.  So while I think the general trend and direction that the numbers show is accurate, I think you could play with a lot with the numbers, especially "active projects" and get results that varied but they'd all point in the same direction – the GPLv3 is being broadly adopted.