Link: Flock
The new kid on the block, Flock, is supposedly launching their first public beta sometime this afternoon/evening/night (version 0.7 — internally referred to as "Cardinal"). The theory behind the new browser is basically web 2.0. It's social. It's efficient. It's integrated. Bookmarks are stored on del.icio.us and displayed within the browser via a custom "live bookmark" system (which is basically how I currently store my own bookmarks in Firefox, only I use Blinklist instead of del.icio.us). Photo storage and sharing is integrated with Flickr. And I'm not sure, but I heard there's some Last.fm stuff going on in there, too (don't quote me on that).
I'm a proponent of new technology–even recycled technology–when it's done right and provides a user with an added or varied experience that is demonstrably beneficial to the user. I'll be downloading the beta and playing around with it's feature set. I'll report back if it's something worth looking into.
Hopefully, it's not another Songbird. That's an unfortunate waste of code.