Google Maps was updated to 5.3.1, but a change log wasn’t posted. We all assumed that it was probably some minor bug fixes because if something big was added, I am sure they would have posted it. For those that are still wondering, we found the info on the Google forums:
Update! We’ve pushed out a new release, version 5.3.1. This version should fix the Manage My Places and auto-checkins issues you’ve been reporting in this thread and elsewhere in the Forum.
Please head to Android Market to download version 5.3.1, and, as always, let us know what you think!