Going from RC to RTW was delayed because we decided rather late to split out the WPF Designer into its own repository (and provide respective NuGet packages), with some architectural improvements that we also wanted to land in the main SharpDevelop repository. You can learn more about this work in Jochen’s blog post.
Our primary means of support is via our
(please do not email team members directly unless they advise you to do
so in the forum)