Actually, few weeks ago, I was wondering about exactly this issue. I am waiting what Canon comes up with, but as I am short on money, I somehow know, that I will go with 350D probably.
But - what really bothered me is CF format. Too big, and for what? Being there, done that - with G2. Nowadays, my Cell phone, USB stick (reader), Ixus 40, my car radio, ALL contain SD, period! I have easily 1GB SD card, why to have so BIG CF? I like to travel with my camera, I like to have my very small usb stick reader with me, so I just plug-it-in into USB slot, insert SD into it, copy on whatever PC. The size of CF simply prevents this idea ...
I know you probably invested in those cards, but I bet there will be more and more ppl in opposite situation, who will actually move to DSLR and will have SD cards.
Anyway - in the case it would hold CF (which, without SD, would be nowadays really stupid decision, sorry), I already looked up for CF to SD reduction, so I will not buy any CF card anymore ...
-pekr-