Ok so I waited until the final release was out. Apparently it didn't matter. After upgrading to IE7 I very quickly became frustrated for several reasons.
Lack or tool bar control;
2 things here, The address bar is at the top and there's no way to change it. Drives me nuts up there. The second is a much bigger problem. There's a new 'command bar' at the bottom of the pile which also can not be moved or removed. I hate it, it takes up to much screen real estate and is mostly useless.
Breaks several important programs;
I have confirmed that IE 7 is NOT compatible with any version of Intuit Quick Books older than and including 2005. Microsoft, this is not considered a good thing. What's the deal here.
A little less important but serious none the less is that IE 7 totally breaks Apple iTunes beyond repair. I was forced to remove and reinstall iTunes from scratch.
Randomly clears cookies
Upon a system reboot I'm finding that all my saved login information disappears, but not every time. It's totally random. Recently typed form info is also erased, again, not every reboot.
The Image Tool Bar
Apparently enough people said that they didn't use this feature, so rather than turning it off Microsoft decided to eliminate it totally. So those of us who used it every day, can't. One of the most useful features in IE and they remove it.
Good going, that's a big step forward. I think you should remove spell check from Word because I can spell quite well and I don't use it. That's not really true but you get the point.
So here it is
Lacks the ability to totally customize tool bars
Breaks Intuit Quick Books 2006 and older
Breaks Apple iTunes beyond repair
Randomly clears cookies on rebooting
Lacks the images toolbar so many of us have come to love
The only thing good i will say is that the upgrade itself went very smoothly. Other than that I think I'm removing IE 7 totally
As of Dec 4th I would like to add that the installation of IE7 also seems to have broken the Apple Quicktime plug in and player. I have reinstalled both twice but they keep breaking. After a day or two of being installed, if I visit a page with a Quicktime movie on it my browser crashes and closes.