I know that there's a lot of comments about this just being a rename of Xamarin Studio, but hopefully this is pointer in the direction Microsoft may go in eventually joining the two IDEs and in a major version or two we might actually have a Visual Studio on Windows and Mac(and maybe Linux?) that are pretty close to each other.
It's not necessarily a rename of Xamarin, Xamarin Studio for mac was built on top of Monodevelop ( http://www.monodevelop.com/ ) and they are using the same thing as base for Visual Studio as well which is why they are all so similar. Im sure microsoft will keep adding features and make it have feature parity with the windows version.
