There are still massive amounts of bugs.
I bugged a bunch and many of them they said cannot be fixed until IE9. I think that’s a bit absurd if you ask me.
There is one that is keeping me from using IE8 full time. If you scroll using your middle scroll wheel on your mouse, the page tends to scroll down then back up and then down again. It’s a nasty bug that is going to plague IE8 into it’s final stages.
I just hope they figure out how to fix it as it is a PITA.