The engine has been renamed Xenko. Here is our new logo, be sure to remember it!

The following changes have been introduced during the renaming and will be automatically applied to your project when opening it in the Game Studio.
In addition, the new Visual Studio integration will not recognize old installations or projects that were not upgraded, and vice versa.
We are aware our documentation isn't where we need it to be yet, so we've decided to take some steps to move things faster. In order to do this, we have migrated our documentation to DocFX.
The new system should provide better readability and more consistent formatting. It also allows us to more easily edit and upload separate documentation for each version of Xenko.
The documentation has its own repository on GitHub: https://github.com/SiliconStudio/xenko-docs
Everybody in the community can now share information by adding edits which will help us to continually improve the documentation. To edit documentation, just click the “Improve this Doc” button available on every page of the documentation, and submit us pull requests.

With your help, we hope to improve the community's experience with Xenko since this will allow people to share information at a faster pace.
Of course, the Xenko dev. team will also be adding more to the documentation as well. More info on that coming soon!
You can now step into Xenko's engine source code. The code will automatically be fetched from GitHub.
The process is simple. All you need to do is open Visual Studio options, go to Debugging > General, and check “Enable Source Server Support”:

The XML format used to import models and animation has been updated to use the latest version of Sprite Studio, instead of the legacy exporter format used previously. With this new format, we recommend that you copy your whole Sprite Studio project (all files are needed) into the RawAssets folder of your Xenko project. Please refer to the sample game for details.
Release date: 2015/12/01