Im not that excited like everyone else.The update will break root and fix the exploits used for the webtop,wifi,and HDMI hacks.Don't quote me but I got a good feeling it will and also have read about it elsewhere on XDA.
I'm one of the few who are going to wait until root,and all the hacks and ROMs are available on Ginberbread
I love the fact we are getting this awsome update but being locked down again doesn't seem fair and not having root sucks surely in a few weeks after the update everything will be hacked again and then it'll be fun.