Here's an interesting tidbit. Denon's admittedly pricey AVR-4311CI -- which was introduced in late April -- may very well end up being the first major product to gain iTunes AirPlay compatibility retroactively. Yeah, retroactively. According to an updated product listing, the AVR will see a "planned upgrade" in the fall of 2010 that will "provide Apple iTunes AirPlay compatibility [that will let you] stream your favorite music to the AVR-4311CI." Now, we already knew that Denon was a
