Google had originally declared it would announce the winning cities “before the end of the year.” They have put off that deadline, citing the large number of submissions.
From Google:
We’re sorry for this delay, but we want to make sure we get this right. To be clear, we’re not re-opening our selection process—we simply need more time to decide than we’d anticipated. Stay tuned for an announcement in early 2011.
Here’s the post from the official Google blog; the delay was announced on Dec 15th, 2010.