My next commuter bike that is. It's either going to be a 2007 Kona Unit 2-9 or a Kona Kula 2-9.
I would venture that they are essentially the same bikes, just in 2008 the geary version of the Unit 2-9 was renamed the Kula so as not to confuse buyers. Both seem able to mount 700c wheels, at least the 2007 Unit 2-9 according to the Sellwood Cycle Repair Shop in Portland, Ore.
Now, I just have to find one in my size. The one at Sellwood is a 19" and that is probably on the low end for me but I will find out. I am thinking 20 or 22" would fit me much better.