Nothing new. That tag has always been in place. It's to prevent using an ad for SEO purposes

Those tags aren't as obvious in interpretation as they first appear. A full write-up is a http://noarchive.net/meta/ for completeness, but in short:

NOARCHIVE: ok to index this page, but don't cache the result permanently

NOFOLLOW: don't follow any links on this page

Note that these two things don't prevent a search engine from visiting a page, indexing it, and providing search results for it.