I am looking to move for the first time to a Mac, think the current iMac is very nice and a good value for the money relative to the PC competition, but don't want to buy now and then have buyer's remorse when something revolutionary comes out in 3 months. I understand from the little I've read that Apple doesn't really announce anything in advance about hardware releases, so any "news" would be speculative.
That said, just wondering what is rumored/suspected in terms of (1) timing of future releases and (2) likely changes to be included in those. Is there anything authoritative/reliable that is known on this front, or is it all speculative? Also, when a new release occurs, what happens to the current models- do the prices get reduced significantly or at all?