The (Google) Chrome/Chromium Team have just released a new minor stable release for their V43 branch.
Seems not to be interesting at all, however if you look into the change log here you can see the following entry:
It was announced that Chrome 43 is going to use “AppContainer” Integrity Level for their renderer processes. However it seemed not to work properly (see https://code.google.com/p/chromium/issues/detail?id=490654 )
Looks like they pulled back for the time being.