I just wanted to let everyone know that I've posted our latest work, which is a release candidate for our next version, 5.2. We've added quite a lot. Here are the release notes:

http://www.concrete5.org/help/building_with_concrete5/updates/versi...

Please check it out and let me know what you think. Since we're including some pretty cool improvements as well as some things like caching (which have huge potential to cause bugginess) we wanted to roll it out slowly and get feedback/testing from folks who wanted to help in that regard. So please, beat it up and let me know what you think.

And hopefully very soon there will be updated documentation covering the developer side to much of these enhancements (new events, how the caching works, etc...)