If you review any of the Denon AVR threads from last year's models you'll see that the most common issue is an HDMI handshake (although most prevelant with cable/sat boxes) which is an issue with the HDCP certification of the component (or lack there of) rather than an issue with the AVR. I spoke with an EE rep about the 3311 backlog and he repeated the same "HDMI 1.4 handshake issue" mentioned in a previous post. When I pressed him further and asked how that is any different from the HDMI 1.3 handshake issues in last year's models, he explained that it has nothing to do with the components (ie cable boxes), rather folks are using the wrong HDMI cable. Huh? EE is a great discount vendor, but I wouldn't count on them to provide any information beyond selling the unit.
I can't explain the reason for the backorder at EE, however, a Denon CSR supervisor indicated he was not aware of any specific HDMI handshake issue. In fact, even just reviewing this thread, the vast majority of posters have made no indication of even having an HDMI handshake issue and those that do, have made one of the several available workarounds work for them.
As bvader suggested, "unbox that baby and get to work."