I got Cryoburn about 2 weeks earlier than expected. I am NOT complaining.
I am, however, already done reading. Unlike some friends of mine, I liked it unreservedly. It seemed to have the energy I remember from earlier books in the series (Even if the editing was kind of 'meh'. Lots of dropped 'the's and at least one 'of'.)
I have seen others call the end a cop out or words to that effect. Me, I thought it was about right. It was, I think, the proper place to end the series, without wallowing. Am I left to imagine more? Yes, but I am not unsatisfied.