Ok, I just read some articles on the new IE 7.0. This is actually kind of humorous, the new features they are touting are:
IE's best features is the gold padlock it
displays at the bottom of the browser when you're on a secure page (or
one that Internet Explorer thinks is secure). For visibility's sake, IE 7 is expected to move that lock from the bottom of the browser and put it near the place where you type in Web addresses.
IE7 Tabbed Browsing Implementation