As I read lovinthehd's posts, I understood this to be a feature of the x300 models (i.e. 2300, 3300, or 4300), not necessarily requiring XT32!
Damn! I was planning to keep my Denon 4520 for the long haul, but if it turns out easy to tweak the EQ on the fly, this is a big enough deal to push me in to an upgrade in a year or two.
You guys hurry up and "Guinea Pig" it for me so I'll know!