Cor.
Phew, what a mess.
It looks to me as if MS have decided to throw everything at the wall and see what sticks. Having said that, habitual users of Windows may find it less confusing than I did just by looking at the screen shots and reading the description. I haven't used Windows since Win98SE.
I find myself in the unusual position of agreeing with Andrew Orlowski on one point. I cannot see how MS can have this all tidied up by the 29th, maybe the upgrade really is "free" because it's a beta release and MS know it.
Good luck and may the force be with you, you might need it.