Pioneer's VSX-1021-K was the first midrange receiver we've seen with built-in AirPlay support, but it's about to get some competition. Denon has announced its entire 2011 line of AV receivers today, including the $530 AVR-1912 with AirPlay support. All three of Denon's higher-end "IN-Command Series Models"--the $600 AVR-2112CI, $800 AVR-2312CI, and $1,000 AVR-3312CI, also include AirPlay functionality, as well as Rhapsody, Napster, Pandora, and DLNA support.
We're currently at the event getting the full details on these new receivers and we'll be posting a more detailed comparison of Denon's new line soon. In the meantime, we're happy to see more options for midrange receivers with built-in AirPlay.