Mitch, the denon website is the worst I've seen in the CE industry but the 4806 will be available in April according to Denon's press releases.
Buckeye, I imagine the MultEq will show up in Marantz and McIntosh eventually. I've also heard rumors that Sony and one other brand (I can't remember which) will be getting it. The problem is it could be a long wait since none of the brands have made any official anouncements (that I can find)...so I'm guessing this is something we will see at CES next year. I just purchased a new recvr before CES this year, my mistake...my next recvr will have this technology...it almost is good as the DEQX correction processor that is currently only available in 2-ch and much much more expensive.