I've decided to sum up the most interesting (from my personal point of view) new stuff in TeamCity 5.1 release. I started writing this post in text, but decided that a form of outline is more suitable for that. So here is the outline I've prepared using Checkvist:
So please, grab it and use! TeamCity Professional Edition is free. TeamCity Enterprise for OS projects is also free.
And there is 60 days evaluation license for TeamCity Enterprise (you can use this license to upgrade your existing TeamCity Pro installation).
Enjoy your builds :)