Come October 1, 2008, Denon owners will be able to download firmware upgrades for their the AVR-3808CI, AVR-4308CI from Denon's website for a $100. What's that get you? Audyssey Dynamic Volume and Audyssey Dynamic EQ, for two, and Sirius radio ready capability and Rhapsody streaming capability for three and four. Meanwhile, the higher end AVR-5308CI AVR (picture) and AVP-A1HDC1 pre/pro can get a free firmware upgrade of Audyssey Dynamic Volume and Sirius Radio capability.