I heard there will be a DSP for these. I have a couple questions:
What does it do and why should I buy it?
When will it be available?
My AV receiver is a Denon 4311, how would it integrate with this?

Niveka,

The DSP smooths out the frequency response to within about +/- 0.5 dB. Since the M80s and VP180 are already very linear it will not make a dramatic difference, just some very subtle improvements across the band. We have finished the code for the VP180 but are still working on the code for the M80. It will be done in about three weeks.

I don’t believe the Denon 4311 has analog inputs for each channel so the only way to incorporate the DSP would be to have it between the pre-outs on the Denon and an external power amplifier.