This is awesome news. Now PowerShell can be used everywhere.
The PowerShell team is excited to announce that starting today we are licensing the language specification for Windows PowerShell 2.0 under the Microsoft Community Promise.
This means that now anyone can implement PowerShell on any platform they want to. We know some of our most passionate customers sometimes work on platforms that can’t run PowerShell today, so when writing this specification, we wrote it in a platform neutral manner.
PowerShell Language now licensed under the Community Promise - Windows PowerShell Blog - Site Home - MSDN Blogs