A lot of news came out yesterday at the Apple media event launching the new iPods. Aside from the new hardware releases there were a number of software releases including iPhone OS 3.1 and iTunes 9. A couple of other interesting things to note.
Apple has discounted the iPhone 3.x upgrade for iPod Touch owners from $9.95 to $4.95. So, those holding out can now get the 3.x upgrade for cheaper. The 3.0 -> 3.1 upgrade is free. Of course, if you are already planning on buying one of the new iPod Touches, you can skip it altogether, since the new ones come with OS 3.1 already installed.
Another important thing to note if buying a new iPod Touch is that only the high end (32GB and 64GB) iPod Touches carry the new processor and 3d graphics hardware of the 3GS.
That means buying the cheaper 8GB ($199) will get you the same hardware as last year's iPod Touch. While few games area requiring the new hardware, over time we would expect there will be more.