Beta Channel has been updated to version 0.12.433.48. The Chrome browser
version is 12.0.742.60.
Once again, it looks like we're in that weird time period where beta channel has a newer version than dev channel. If you're on dev channel and you're now envious of beta channel users, you can drop back to beta channel and grab this update, then switch back to dev channel so that you're ready for 0.13 when it hits.