Your jumping the gun a bit. No matter if Michael had a new album out or not, it's only logical that Thriller25 would be released considering how much of effect it's had on popular culture. I've been expecting a 25th Anniversary Edition of Thriller for quite a few years. I'm also expecting a 30th Anniversary Edition of Off The Wall. It's not the point of it been a good idea, it's a point of celebrating brilliant and innovative music that changed the scope of pop music.
No one in particular, but a number fans are being too impaciant waiting for Michael's new album. Sure it's been almost a whole decade since Invincible was released, but Michael's had a very tough decade and now finally happy and relaxed again. The new album will come, and Thriller25 isn't a replacement or a distraction from Michael releasing a new album. If it was a replacement for a new album, I'm sure Michael would have performed some Thriller songs at the Grammy Awards etc, or had set some rumored dates at the O2 in London to do a greatest hits show to promote Thriller. There is a lot more Michael could do to promote Thriller, which he hasn't done because I'm sure he's more interested in recorded his much awaited album. Unfortunatly Michael is a 2 album a decade artist, I'm use to it and other will have to learn to wait because we have no choice and Michael's not a machine.