I'm working on a simple prototyping PCB for the new Philips LPC210x ARM chips. Details of the draft schematic are here:
I'll be incorporating a sizeable breadboarding area.
I'll complete the PCB layout when I actually get my hands on a couple of chips, hopefully in a few days. I should be able to get away with a cheap double-sided PCB, as all the high speed stuff is inside the chip.
I'll be putting it into the public domain and making the PCB design files available to anyone who wants them.