The Dev channel has been updated to 21.0.1180.15 for Windows, Mac, Linux, and Chrome Frame platforms
This version fixes a small sync problem (Issue: 134715) and contains a fix for Mac hardware with the Intel HD 4000 graphics chip (e.g. the new Macbook Airs), in order to prevent a resource leak which is causing a kernel panic on that hardware. This is a temporary change while we work on fixing the root cause of the issue.
More details about additional changes are available in the svn log of all revisions. You can find out about getting on the Dev channel here: http://dev.chromium.org/getting-involved/dev-channel. If you find new issues, please let us know by filing a bug at http://code.google.com/p/chromium/issues/entry