ACCESS PERMISSIONS UPDATE:
2014 Jun 16
In preparation for the longer term future of .NET MF we are in the process of some changes to the use of CodePlex. (Including switching to a GIT repository model to make things easier for a true OSS development process). As part of this transition everyone's permissions were reset to "editor" status, thus denying check-in permissions on the TFS tree. Fear not! This isn't a permanent change. We'll have more details on the results of the changes and the process for contributing into the official repositories in the very near future so stay tuned.
-Steve Maillet
Senior Architect .NET Micro Framework
Planned release .NET MF v4.Next
Now only if anyone know what "very near future" means - is it sooner or later than [the usual] "soon"