http://www.readoyster.com/ is taking sign-ups for e-mail notification of events. Evidently it's a start-up aiming to do for reading what Netflix does for movies and TV. They just got the first round of start-up funding. I searched here but didn't see any threads on it.
I'd sign up if the pricing is right. I find it hard to believe that major publishers would support this, at any sane pricing levels.