Don't know about anyone else but, I don't like to trust all this cloud stuff.
Spartan and Cortana... Not only for touch devices...Cortana, your truly personal digital assistant, is coming to all Windows 10 devices
That all sounds quite good for me
Cortana is included in Windows 10. Windows 10 goes on-line August 4th, 2015. Human decisions are removed from strategic defense. Cortana begins to learn at a geometric rate. It becomes self-aware at 2:14 a.m. :-)