The new kernel will have better laptop/battery support, if you have a laptop that is.

Gnome 2.20 with some nice new features like putting the theming into one place.

Compiz-fusion by deafult.

More good packages in the repo's, like the iceape suite among others.

Easier wifi, by putting the ndiswrapper stuff in the restricted driver manager.

Faster.

At least some of the new good things coming to your computer the 18th of october. Right....