In his blog, Photoshop Insider, super guru Scott Kelby points out some fascinating news about Photoshop upgrades and prices. See, in the old days, you could get the upgrade price for the latest version of the mega-program no matter which Photoshop was the last one you bought, even if the last one you shelled out for was version 2.0. Scott notes:
As of the release of Photoshop CS3, you'll only be able to upgrade at the standard upgrade price if you have Photoshop 7, CS, or CS2. So, if you're still using Photoshop 6.0 or earlier (and some people still are) here's what I'd recommend; upgrade to Photoshop CS2 now (you'll pay something around $169), then you can buy the upgrade to CS3 when it comes out at the regular upgrade price, which will save you literally hundreds of dollars over having to the buy the full version once CS3 ships.
So all you 6.0 users on the fence about the new version: you have until Monday the 26th to save yourself some serious bucks.