(5)
Just when we think authorship and publisher is dead, because Google dropped author images back in June - we see signs of maybe rel=publisher making some headway?
A tweet by @northeasternext shows Google testing showing "learn more about..." with an image next to it. It seems if you click it, you may be taken to the Google+ company profile.
Here is the screen shot:
In this case, the search was done for the query [exterminator brooklyn ny] on an iPhone using the Google search app. I was unable to replicate it on my Google search app on my iPhone, nor normal search in mobile safari on Google, nor on my desktop.
Google has not confirmed anything with this test, but it would not surprise me if Google continues to test authorship, publisher or some other forms of Google+ local integration.
Forum discussion at Twitter.
Update: As Enrico Altavilla commented, I should note, that this does look like a mobile view of the knowledge graph drop down overlay links we see on desktop. But I still cannot replicate this in mobile.
Here is the desktop version:
@northeasternext sent me more images of the behavior that shows this as collapsed on mobile:
And this as expanded on mobile:
