I'll take a look to see if there are any newer HS models with more resolution available now.
I see that there's a new ELPH 340HS model out now with a 16MP CMOS sensor. The vendor's website says that it's Digic 4. I haven't seen any threads on porting CHDK to it, but I assume that it would be pretty straightforward. Does anyone here know if there is any reason why the port might be difficult?