They're not going to opt for the OLED screen until early 2010 for another project, and then later in 2010 roll it out across there portable range.
As for GPS; it's not happening for the iPod touch and neither is the camera i'm afraid. However based on feedback and use of the improved iphone camera, apple are working on a alternative.
Currently dubbed iCam, it's designed to wirelessly sync photos to your mac/pc and/or your ipod touch/iphone - it's likely to come in 3 memory sets with appropriate resolutions for each price range. It'll include basic optical zoom and simple settings for day, night, indoor and outdoor. Aimed at the general market, not professional.
It'll look similar to the current iPod Classics, slightly thicker, with the screen acting as it should in any camara. The wheel will also be the same but orientated differently. Matt finish, very early development at the moment - released around fall 2010.
Third generation iPod touch will include build in Barometer, Compass, Altometer and Stepometer as part of the B.A.C.S. system, this is/was supposed to be a surprise - oh well! It's there to set it apart from the iphone as an all round, outdoors device and just a cool gadget - Plus digital basic radio.
-Just imagine the Apps!
No mic, but they'll encourage the use and support of bluetooth headsets -
-Hello skype calls!
Plus the obvious, it's going match CPU, wireless and other internal specifications with the iphone 3G S. No 64gb memory upgrade though 🙁
And that's about it on the hardware, the software info on bluetooth and P2P has already been leaked.
Anything i miss out?