Yep, that was what I was going to say and Denon has no information on their site either. Everyone is still advertising the 3806. I would imagine it may be first quarter next year once they have the HDMI 1.3 spec figured out as well as Dolbly True HD, etc.. Heck i've heard no official word that it will be designated 3807 but it would stand to reason.
Did a dbuys search, it says pre-order the 3807 but doesn't give a definite time frame. It also looks as dbuy might not be an authorized online dealer so I would take what they say as suspect at best. When Denon says it on their site, i'll believe it.