I just update and start using Cubase PRO 8 x64.
WOW!!! 
Freaking beautiful GUI, colors, how it reacts and intergrade with the user and everything.
I’m really amazed that anyone have the nerve to complain about this?
What Steinberg has done is an amazing update. You all that don’t get that or like it should go elsewhere or go back to Windows 95. I know that all other DAWs manufactories and programs will copy Steinberg’s new GUI integration and behavior.
Extremely good first impression, really solid first release!
The sound of the new audio engine sounds great too. VIVID GUI colors that stand out and much better GUI integration and options. Cleaner look. CMC-hardware controller surface work and LED lights work too. Plugins that seem to work without any problems (NVIDIA):----> Native Instruments Komplete works both Massive, Kontakt and Absynth’s GUI work (some had issues), Spectrasonics work, Nomad Plugins work, SPL work, Brainworx work, Waves work…
Its safe to update already today, even if you are professional user.
Best Regards
Freddie