I sent an inquiry to them about developing for the giz... this was their response.
Hi Caleb,
Thank you for the interest. Unfortunately, we are only able to work with established developers at this time due to limited supply of Devkit units.
If you would like to work on a demo for submission, please feel free to download an OpenGL ES SDK from:
http://developer.nvidia.com/object/hhsdk_home.html
This will get you up and running.
Once again, thanks for the interest.
-Gizmondo Studios
So it looks like there is some hope, but essentially, its not happening for independent studios and dev teams.
Thanks
Caleb