Popup window supression, skinable, tabs, what more could you ask for? Well, applying skins without restarting and a less monolithic nature (no email/news integration), but I digress. Check out the latest incarnation of what some are calling the best browser out there.
The Mozilla team has chosen the interesting aproach of a branching development tree where incremental updates on the original code are developed alongside new versions so version 1.01 will be out soon for people who aren't ready to jump to 1.1.
A little confusing, but well worth the download if you missed 1.0!