According to Scott, both projects will merge together:

https://twitter.com/shanselman/status/532558786486370304

They seem to be cooperating with Xamarin, to some extent:

"To further support cross-platform mobile development with .NET, as part of their strategic partnership, Microsoft and Xamarin announced a new streamlined experience for installing Xamarin from Visual Studio, as well as announced the addition of Visual Studio support to its free offering Xamarin Starter Edition — available later in the year."

http://news.microsoft.com/2014/11/12/microsoft-takes-net-ope...