Love the idea. My first thought is that the icon looks like an alarm clock.<p>Currently, the way I track album releases is by following every conceivable artist on Spotify, which will then notify me. What I like about this is that I can then stream the whole work, for free. However, Spotify doesn't always have works when they're immediately released. Additionally, I have to follow the artist in the first place--there's no library scanning. There's also the chance that I'll have work by an artist in iTunes but won't have ever followed/listened to them on Spotify.<p>In other words, could you also make a Spotify plugin which scans listening history, and combines this with your iTunes library?
This is something I wanted to build for myself for a while, at least as an RSS feed or email notification or the like. That way I could track bigger releases the same way as my Bandcamp music feed emails. I'll give this a shot.<p>EDIT: I like the app, but my immediate thought is to offer a feature request to explicitly <i>not</i> track a certain artist. There's at least one artist I spotted in my recent releases that I don't want to pay attention to, and receiving notifications for them would seem like a waste. Otherwise, it's great! Much better than last.fm's release tracking, which had a tendency to get confused by similarly-spelled artists more often than showing actual releases.
Partly, because I'm disappointed I won't be able to try it, and partly out of curiosity, what was the reason for not just making this an HTML5 web app? Was there some functionality you couldn't get from Web APIs?
Where do you get the release data from? A couple years ago I started to work on an app to do this exact thing but I couldn't figure out where to get information about releases in an automated way.