Oh and the internal Radio (tuners) aren't available into Zone 3 on the 3700, only external sources are available into zone 3. The 5700 will allow this.
These will be available the last week of January. They will do 3 zones of audio, 2 zones HD video (but not HDMI into 2 zones). It does have 2 HDMI outs, but they are mirrored. The zone 2 component out is the matrix HD Video out. Hope that helps!