Last night Google pushed out an update for all platforms running the dev channel, adding various fixes for all platforms and a good amount of small improvements to Chrome's extension capabilities.
The Mac version saw the most action this time around, including the addition of keyboard shortcuts (Cmd+0 through Cmd+9) for jumping to specific tabs, search engine manager updates, Find bar tweaks and more small but nice-to-have fixes and improvements. If you want to hear all the details, you can check out the full changelog.
To update if you're already running the dev channel release, go to About Google Chrome from the Customize menu and let it check for updates. Otherwise join the dev channel here.