Kristi stated in a different thread that the purpose of the update was to comply to Google's new asinine rules which require that a site be 100% mobile-compliant in order to show up on their search engine. That is why Rendo can't just revert to the old layout. (Of course, right now, the site doesn't look or work properly no matter what hardware you are viewing their site on) Judging by some of the lackluster search results I've gotten in the Image search recently, I believe it has already been implemented there, at least for some sites. Whether the gallery changes, "for you", and "activity feeds" have anything to do with Google's requirements, I have no idea.