Adding a couple new head units:
Panasonic Strada CN-NVD905U
7" screen, HD based NAV, 30 GB. Looks like a competitor to the AVIC-Z2 but the Z2 has this one beat in features. Panasonic is also asking $1800 for this which basically is going to kill the deal for most people. Does not appear to do DIVX, no USB. This is a poor seller for sure.
JVC KW-AVX800
This is a good unit. 7" Screen, USB, SD card, DiVX (not over SD slot though). JVC is currently the only manufacturer that offers DiVX ULTRA certified products. DiVX Ultra is a huge improvement over DiVX as it adds features such as chapters, language channels, etc. It's basically just like a DVD. Now, the bad. The Ipod is controlled with a box which means it's gonna be slow. Also, they list the USB devices as having a 10GB limitation but someone on Crutchfield reports being able to connect a 160GB drive.
Jensen VM9022
Interesting deck. Why? At about $600 street price, you get a 6.5" screen, integrated Bluetooth, USB, and SD Card support. High speed Ipod controls and the GUI looks slick.
FYI, the Alpine IVA-W205 is also out. It's a good value at $899 Crutchfield price. Blackbird II to follow.