I have Win 8 CP installed in a virtual machine on an i7 laptop, I limited the virtual machine to two cores and only 2GB RAM and I see no typing delay.
Basically MS redesigned the start menu so it takes up the whole screen and now call it "Metro UI" and allow some apps to run inside it. The desktop hasn't gone away. I'm typing this right now on a real keyboard and using a real mouse, not a touch screen, they didn't take away the ability to use keyboards and mice. I think most of the complaints that people keep posting are about issues that don't even exist, they just want a reason to grab their pitchforks and torches and attack something for not being the way that it always has been.
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