It's worse than that, IMO. The latest changes in Windows Server appear to me to be merely rearrangements of the GUI -- superficial, needless, and troublesome. I don't want a server OS that has a GUI based on a first-gen tablet UI, but that's Server 2012R2. We hates it we does.... OS for nassssssty hobbitses.
Frankly I'd much rather work with a commandline and/or Server 2003's UI than 2012R2, which is a shame because 2012R2 seems to be a really strong release, other than the stupid UI. So I'm really hoping that 2016 reverts back to common sense. It's a server, dammit, not a freaking handheld for 20-somethings.
Just my opinion, of course, others obviously like that stuff...
See What's New in Windows Server Technical Preview
I like the new features in Hyper-V, the new Server Antimalware feature, and big additions and changes to Storage Spaces.
I run all my servers now as virtual machines. The only thing I have native on the hardware is the Hyper-V role. Facilitating failover and supportability of these virtual machines is going to be the highlight of the new server.