Due to department adjustments and some strategic changes, the micro framework is about to join Microsoft's open-source program. The open part may includeSource code, Class Library Model and basic driverProgram.
"Following the move of the. Net micro Framework Team to the developer division of Microsoft we are planning on involving the community in the future definition and development of the productAllowing access to the source code of the runtime and object model, as well as the drivers. We are currently in the process of framing the rules of engagement and we hope to be able to offer both a process for a regulated development effort and a broad license, so that it will be possible to take advantage of the code base without necessarily contributing to the community."
Message Source: http://blogs.msdn.com/netmfteam/archive/2009/05/07/net-micro-framework-evolution.aspx
It seems that, in the wave of Microsoft downsizing, the vitality of the micro framework is still very tenacious.