What you are looking at is a screenshot from Nintendo’s support page. What exactly does it mean? It means that the characters listed at the top of the picture were newly manufactured and deemed CPSIA (Consumer Product Safety Improvement Act) compliant. It basically means they won’t kill you. It also means that some of the most popular of the limited run amiibo have been re-manufactured by the company for release.
It means there are going to be new retail runs of charaters like Meta Knight, Ike, Sonic the Hedgehog and Marth (whom we already knew about). If you missed out the first time now might be your chance to grab some of these amiibo that your collection is missing.