John Olinda We now have trailers for trailers.

Nkrs It's the digital media, where the audience needs to be bombarded with information all the time to keep the attention up. Similar story with bands and musicians: new album announcement teaser, new album art teaser, first single teaser, first music video teaser... By the time the album comes out, everybody knows everything about it, there's very little joy in getting your hands on it, but at least everyone paid attention.