Wow, nice.

Do you have access to actual hardware that you can test it out on? I think that would be your last official step to ensure that ZenGL will run on the iPad or iPhone well.

Also, it would be a HUGE boon to those that want to setup FPC on their Macs to do iOS development if you could write a tutorial on how to get a development environment setup and what configurations should be made. This is something that has hindered even my own progress on this front for my own iOS efforts.