Here is a new update for the stable TeamCity versions: 8.0.6 is ready for download with the latest fixes included.
Most notably, full support for Visual Studio 2013 and ReSharper 8.1 is now included out of the box. The version also contains several important performance improvements, so upgrade is recommended.
TeamCity 8.0.6 still uses the same database format as other 8.0.x versions, so you can upgrade/downgrade between the versions.
This might be the last update for 8.0.x versions as we plan to release 8.1 in February. It might be a good time to prepare for the upgrade to 8.1 and try 8.1 EAP to see how it works in your environment.