I was searching a lot regarding rel=publish and rel=author but got some doubts because most articles are from 2013 and 2014.First, I understood that Google is not showing author's picture in SERPs since 2014. I also read that it simply ignores the author link type. From the search engine standpoint I got it, but is the author link type still used by G+ in any way? I think the answer is no, but would like someone's confirmation.Second, Google said back in 2014 that authorship was dead but that the publisher link type was still being used. Is this still valid? I put the rel=publisher attribute in my page but Google's Structured Data Testing Tool did not show anything about it (seems to be ignored). Again, is this still being used by G+ in any way?The question can be put as: Shall we still add rel=publisher to a site? And rel=author?In time searching I found this question, and based on it I see that at least Schema.org name property is being used by Google. So I guess that publisher property might be too.
Are the author and publisher link types still relevant for Google+? (2016)
seo;google plus;rel;author