Pentium based Q1. Photo evidence.
Here's proof from Millard (origamiportal.com member) that the Q1 he has is a Pentium based device. Click to enlarge.
The model number of the unit is still 'Q1.' I suspect that this is to get round a costly and time-consuming FCC approval process.
Thanks Millard. We'll be following this up on the Origamiportal thread here.