I'm not yet a mac user, but i've been doing a lot of research on them similar to what you need with a view to switching during the summer. Apple is commiting to making a full transition to intel chips, so with the exception of the powerbook, expected to be fully replaced with higher-end MacBook pros, i'd expect all those others you've listed to be released with intel chips before the end of the year, and most likely higher specs than the existing models for a similar price. New iBooks are expected to be announced as early as in March, possibly April, and they're expected to be standard 13" widescreen. The resolution should be being upgraded to, as previously it was only up to 1024x768. Less is known of a release of the mini, but rumours have been circulating about it being used as a full "media hub". I'd recommend waiting until at least April. By then a full range of laptops should be released with the intel chips, and you can see if they match the specs you need. If portability is a bigger issue than performance then you'd be better off going without the mini, I wouldn't predict radically different specs between the existing model of mini and the new laptops, or major price differences. Best places to start would be mac rumour's buyers guide, as it lists average times between releases in product lines, it gives a simple way of checking if a new release is likely soon. It also links to reports and rumours of new products, IMO it's the best way to keep up to date with predictions of just what the new line'll feature. Off topic, but it's nice to see the Saul signature.