Difference between Pioneer VSX-920 & VSX-921?

[Quadzilla]

Hello everyone,
Can someone please tell me what the difference is between the Pioneer VSX-920 and the Pioneer VSX-921? Amazon has the 921 for $449 and the 920 $259.

The only thing that really stood out on the Pioneer website was where the 921 was described as "Industry's First AV Receiver Designed for iPad®", whatever that means? Thanks in advance for any info you can provide.

Dan

 

[bikdav]

The way I understand it is that the 921 is meant to "sync" better with Apple iPad and iPod operations than the 920 [make operations a little easier]. I also understand that the 921 is better suited for Blu-Ray 3D operation.