Highlights in this release:
Fixed issue 15199 where new windows are opened off screen, in certain conditions, for dual monitor users.
Fixed issue 16052 where a tab would close if a new url was navigated to too quickly during a page load.
Alerts/authentication windows are no longer wrapped by an OS window.
Windowed plugins like Flash no longer hang after a print dialog is displayed.
Updated V8 to 1.2.13.2 to fix some crashes

Communication still seems to be broken, and I don't see any implementation in th json of their i18n proposition yet. :/
However it looks like they added an "update_url" key in 3.0.190.0 that I didn't notice until now.
It just takes a URL string as an argument an validates it. The comments say "URL for fetching an update manifest" so it's probably some special updatey thing. I only mention this cause I haven't seen anything about it yet.