Post-PC sounds weird for me, because a smartphone is becoming a Personal Computer, especial if you attach it to a big display and keyboard, and if it will be a

Post-PC sounds weird for me, because a smartphone is becoming a Personal Computer, especial if you attach it to a big display and keyboard, and if it will be able to run a full OS like hopefully the Windows 10 (which is technically very possible with the Intel CPU phones). At that point only the size and the lower (but useable) performance will be the difference.