How About Cross Platform SQL Server?

In the world of Microsoft big new recently:

Opening up Visual Studio and .NET to Every Developer, Any Application: .NET Server Core open source and cross platform, Visual Studio Community 2013 and preview of Visual Studio 2015 and .NET 2015

For those programmers working with .Net, this is a huge new way of doing things.  Open Source.  Cross Platform.  This should really open avenues to bring in more developers from some of the 'free' languages.  Write once, deploy anywhere.

That got me to thinking, why not do the same with data.  How about SQL Server running Cross Platform?  On Linux and Unix operating Systems.

Only makes sense, MySQL has Cross Platform.

What do you think?  Possibility?