The release notes for this revision aren’t too revealing about the changes made, but the developer announces that the build did away with several known regressions and adds some stability fixes. However, you can check the revision log for detailed information about the modifications.
A couple of known issues still remain, one of the entries reporting problems with rendering Facebook on occasions, as the page is only partially opened. This would occur on Windows and Mac.
The other problem popped up only on Windows and refers to the Chrome uninstall dialog, which would miss the “Cancel” text string.