We have a new release that fixes an important bug in when running the editor in a website that targets .NET 4.0 and Ajax control Toolkit. This release does not break any features so it should be a fairly easy upgrade.
Currently we are restructuring code in preparation for new features. So unless there is a major bug to fix, we will be skipping a few iterations.
One of the things we don't currently do is check in our code on codeplex. Instead we make releases and put out packages in the download section. Hopefully from the next release onwards we will start doing that too.