Today, at the Microsoft Professional Developer Conference (PDC) in Los Angeles, Microsoft announced the release of version 4.0 of the.NET Micro Framework, but also that they are open sourcing the product and making it available under the Apache 2.0 license, which is already being used by the community within the embedded space.
The .NET Micro Framework,a development and execution environment for resource-constrained devices, was initially developed inside the Microsoft Startup Business Accelerator, but recently moved to the Developer Division so as to be more closely aligned with the overall direction of Microsoft development efforts.