I'm no expert on this stuff, but I think popular routes or Elite heavy routes don't have their R (or whatever the new class may be) released for EUA until later. I'm on 383, BOS-IAH at 4:50 pm on Friday, July 17, 2009, and online tools are still showing nine seats in the front cabin. I suspect that this is Elite heavy and some people may be willing to pay either miles or money to get the front cabin, so Continental may be holding out for those passengers. Odd thing is that all my return legs were all ready upgraded and they seemed to be equally desirable segments (IAH-BOS on a Sunday evening).