Search is back!: we now have keyword search back on the home page. Search is now geared towards site discovery rather than long-tail results.
Featured content: not only can you now feature wiki pages (like photos, videos, and threads), but you can also elevate discovery of said content via a snazzy new flash module. Check out the featured content module on the James Bond wiki for an example (scroll down to the right).
Content without tags: now that we’re using tags more extensively for related content we pulled together some quick reports on content that doesn’t have tags. Check out the reports on your favorite site.
No naughty renames: want to rename a page to a naughty word? No more. Page renames use the same filter as newly created pages.
No naughty site names: now, like page names, sites cannot be named with inappropriate words.
A few nav tweaks: big changes coming to the nav in the next release, but for now you might enjoy the direct link to your profile and inbox without the annoying drop down.