MongoDB 2.1.2 is now available for testing.
As a reminder, 2.1.2 is a development release and is not intended for production use.
The 2.1 series will evolve into 2.2 which will be for production.
2.1.2 includes TTL Collections, tagged chunk ranges, and improved support for db level concurrency so help testing would be greatly appreciated.
Change Log: https://jira.mongodb.org/browse/SERVER/fixforversion/10894
If you have any questions, please let us know.