Social bookmarking site Delicious launched a limited, invite-only preview of version 2.0 of the service this afternoon. The new site can be accessed at preview.delicious.com, although only invited users can actually get in.

The Delicious service (no longer “del.icio.us” and now residing at delicious.com) boasts 3 million registered users and 100 million unique URLs bookmarked.

The preview shows a substantially different interface than the current Del.icio.us site, and a number of new features.

They have also added bulk tag editing (very much needed), and organization and sorting of your network of friends and people you watch.