Was looking at some artists I like and it doesn't appear that their site utilizes RSS.

Are there any good sites out there that track concert announcements and release dates?

I haven't found any reliable general source for concert dates, but if you want to track sites that have no RSS feed (but are html and not Flash based), try out a service called WatchThatPage. You can give it a list of web pages to check, and it'll send you an email if they change, thus allowing you to track changes and keep up to date with sites without having to check them every day.