Just my take, but I'd save the money you have earmarked for an HDMI receiver and go with the highest quality receiver with multiple digital audio inputs (Optical/Coaxial) you can find.
You could manage video switching via the 60XBR1 and audio switching via the receiver. Upconversion and de-interlacing in a receiver seems kinda redundant to me given the other components you're looking at for your system. BTW, you didn't mention if the DVD player you're looking at does upconverting also. I'm guessing, since it has an HDMI connection, that it does.
I have been researching for months and am almost ready to take the plunge and assemble my home theater system. The TV will be the Sony 60XBR1, DVD will be a Sony model with progressive scan and HDMI, and for a receiver I am looking at the Yamaha RX-V1600 or the Denon 3806. I will be getting my HD through Direct TV. My question is, should the the DVD and Direct TV be run through the receiver (since both models have 2 HDMI inputs and up-conversion) or should they be run directly into the TV. If I do run them directly through the TV, how does this affect or limit my ability to use the surround sound capabilities of the receiver. Obviously, if I don't need to have the video sources go through a receiver, I can save money by buying a receiver without HDMI and spend the money elsewhere, like the speakers. Many thanks.