Keeping up on new releases, reissues, etc.

What are your favorite sources (print or online) for keeping up on what's coming up, what's coming out, what's about to be reissued? There was a time, though it feels like quite a long time ago now, when I used to be quite aware of what was what, at least in the area one might generally call rock n' roll. These days, though, I'll learn about an album by an artist I actually like that's been out for a year or something without my ever even knowing about it at all.
Thanks, folks.
-- Howard