Well, I bit the bullet and installed it - felt a bit selfish announcing that I was waiting for someone else to take risks on my behalf! Anyway, am posting this from IE7 and have two tabs open. Pleasant, but hardly earth shattering. I haven't used it much other than to post this note, so am not in a position to give a considered review yet. My first impression, though, is that the menus and toolbars are a dog's breakfast... I had RC1 installed and find this much more frustrating.
I WILL say this, though, I had a helluva time installing it. I had to turn off my firewall and antispyware AND I had to run the installer from C: drive - running it from F:, which is where My Documents reside, and with anti-spyware and firewall enabled crashed my computer three times.