In the new release on Visual Studio 2015, the Premium and Ultimate editions are being merged into a new version called Visual Studio Enterprise Edition. So all of the great features of the Ultimate edition will be available to Premium subscribers. I am really happy about this, being a MSDN Premium subscriber. More information is available in the following links:
https://www.visualstudio.com/products/vs-2015-product-editions
That’s great news! I’m also an MSDN Premium subscriber so I’ll check out the Candidate Release real soon. In particular I’m looking forward to finally having Code Lens, because in VS2013 it was restricted to Ultimate Edition only.