as it was only released publicly yesterday I'm not sure how many will have it at the moment.
but goodbye apdivs (finally)
sadly goodbye to "print code" - i know i was probably in the minority with that one.
goodbye spry (yay)
hello to jquery ui, and typekit built in.
the css designer window is OK, but needs more refinement.
and with webkit built into it now the rendering of the "live view" is much better, and the "live code" when it gets ironed out i can see design view also disappearing soon too, which would realistically be the best improvement they could ever make.