We've spent the last several months working intensely on completely rebuilding the internals of our market-leading WPF Docking/MDI product. This project is called "Docking/MDI vNext" and keeps the same general API surface, while providing even more advanced features in every area of the product, evolving it into a true best-of-breed docking tool window and MDI functionality solution.
Beta Testing Progress
A couple weeks ago we began the beta testing process for Docking/MDI vNext and thus far, it's been going very well. The product has proven to be very stable and only a handful of minor tweaks and adjustments have been needed. At this point, the product is considered feature-complete for its first shipping version.
We've been spending time during this beta testing period improving some samples and adding/updating lots of product documentation. There are an enormous number of new features in vNext, so we want to make sure we cover everything.
Our plan is to launch final 2015.1 version maintenance releases next week and then start transitioning internally to 2016.1 codebases. Then we'll begin swapping in Docking/MDI vNext in place of the classic Docking/MDI product and will get all the related samples, documentation, etc. merged and ready to go.