When creating a new empty site with the Visual Studio extension it adds mvc 4 to the site.
I hope this can be changed so it would add mvc 5 instead of 4 because the upgrade from four to five is kind of painfull with a lot of changes in web.config that must be done by hand and EPiServer works great with mvc 5 and OWIN
Thanks for the feedback, it's in the backlog.
And now it is in the public version, great work!!