There have been many rumors weather apple will produce a new PDA or not. Fact is, that when Scully left Apple and Jobs came back in, no attemt in this direction had been made. Steve Jobs is known for hating the whole Newton series, but lately, with the i-Software, truning computers into "digital hubs", it would be the next logical step, to bring out a PDA, so that you can take your data with you.
I believe, that there will only be a new PDA form Apple, if the engeniers in Cuppertino figure out a new way to input data. Todays solutions are more a compromise than really usable. Whenever Apple kicking out a new line of productions, they have to be revolutionary in terms of usability and design.
Let' s see...
Btw. I unplugged my MP120 about three month ago. RIP