The Photo District News' blog is pointing to a post on Masterchong.com that has photos of Sony's upcoming 24.6-megapixel, full-35mm-frame sensor SLR from the Photo Imaging Expo in Tokyo, Japan. From what I can tell, the photos seem to be of the same prototype that was shown at PMA earlier this year.
While Masterchong.com refers to the SLR as the DSLR-A900 and says that it'll be officially announced at either the IFA or Photokina trade shows later this year, our Sony contact for the U.S. said that the company has not released an official announcement or ship date and that there is no official info regarding the name of the camera. If you ask me, I'd expect that the camera would be announced sometime in the lead up to Photokina. Since that's toward the end of September, I'd guess that we'll hear more sometime in the middle of that month. We'll be sure to update you as soon as we know any more info.