Your humble editor is currently in the throes of rehearsals, so I thought I'd point you toward some online opera magazines that can help you get your opera info while I'm swamped!
Opera News, the magazine of the Metropolitan Opera Guild, is fully available online only to subscribers, but visitors can get a taste of issue highlights and opera news and commentary.
BelCanto is an online-only magazine devoted to music and culture, with a strong opera section and a useful glossary of opera terms. My favorite opera e-zine, though, is
OperaWeb, available in both English and Italian, with lots of news, references, and fun stuff. I particularly recommend
The Crazy Opera History, a "semi-serious, but more semi than serious" look at opera history. I'll review this particular site in more detail next time, but it's definitely worth your time!