Design and Production Premium prices remain the same ($1799 US for Design Premium, $1699 for Production Premium), but the price of Design Standard is now $1399 US, up $200 from Design Standard CS3. Upgrade prices on suites appear to be about the same as CS3, although Web Premium is $100 more than it was 18 months ago.
If you had already purchased Design Premium CS3 before May, 2008, you will be happy to know that Fireworks is now included in this suite (it was included in suites sold after May of 2008 or if you paid the $160 to upgrade to Acrobat 9). In my opinion, Fireworks never should have been omitted from Design Premium in the first place, so this is a great addition.
Adobe Creative Suite 4 has been shipping sometime in October. One note for PPC Mac users — Adobe After Effects CS4 will only support Intel systems. Premeire Pro CS4, like CS3, is also Intel-only