Brian,
You are correct, my oversight, it was late

You get a 2600 millamp with the IQ's (at least I did), but if you order the Credo, you get the 2900. I immediately ordered one of the 2900
batteries for my IQ, it works fine, but as you point out does not ship with it.
I was also told that Phase would be shipping the newer batteries with the IQ's sometime in 2012.
From my usage, I really didn't see much difference between the 2600 and 2900 in length of usage. I actually have better results with the Silver batteries
sold by Capture Integration in Atlanta. These cost 1/2 of the Phase batteries and last longer (at least they seem to).
Paul