I used to be a fan of several bands and would buy everything they released, but now I'm in my mid-twenties, busy with work and family etc, I don't really have the time or money to invest in music like I used to.
Saying that, I was really excited when I found out that a new Tool album was in production and check news and fan sites regularly for more news. I've been a fan of Tool since Schism was released as a single in 2001 and since then I've bought their last two albums on day one. I know when a new Tool album comes out that it's guaranteed to be brilliant and have years and years of replayability.
Another album I would be excited to see is a new System of a Down album, only because I was a fan since the first album and I'm curious to see if they've still got the magic, ie; they produce things greater than the sum of their apparently mediocre parts. All the solo and sideband shit that's crawled out during this recording hiatus (coming up nine years...fuck) has been garbage IMO, so I'm not holding out for much if they do ever release another album, but I'd really like to be proven wrong with SOAD.