I think the only-for-developers-release doesn't make much sense, but somehow this is the official standpoint, not only a drunk one.
Yes, you will have more false alarm if you release the ROM public, but hell, this is a free project! Most of the people here choose Zaurus because they love the Linux/GNU/free software attitude. Most of them love using bleeding edge stuff and experimenting with the lastest things.
This type is not always the "I-crosscompile-what-I-need" person, he only use stuff well. You can drive a car very well, even if you can't make/repair one. (However you can be a better driver if you do know more about the buildup of cars!)
So, I think you can release developement versions with a scary warning that you can trash your Zaurus with it. (I don't get it exactly how, because you can't really hurt the internal flashing program, OK, maybe with a wrong C program)
Free Kathrin!