The update was manually pushed and is still not running as a rolling update - so I was wrong on that front.
Webmasters believe this update began on July 22nd, which goes along with Google's statement of it being pushed out "late last week."
Google said:
Webmasters believe this update began on July 22nd, which goes along with Google's statement of it being pushed out "late last week."
Google said:
This update incorporates some new signals that help differentiate between higher - and lower-quality sites. As a result, some sites are ranking higher after this most recent update.