Recently, iPad root file system explorers have just found references to multiple new apple handhelds in development.
References found in the ipad root system have shown 3 discreet models where apple normally has just one.
Hinting towards CDMA iPhone? (maybe) and iPhone HD.
The most significant reference has shown up for the iPod touch 4,1 . Which points to the 4 gen iPod to have a major redesign, instead of a refresh.
Can you say built in camera & more ram/better processor? ---possibly
Also within the root files, 3,2 and 3,3 iphone references has been found, along with a iProd 2,1 (newer iPad).
From what ive been reading this year is going to be epic for the iphone & itouch. Just hope it lives up to the hype this time....
As of now all this is speculation and rumours - nothing confirmed as of yet.