Do they? thats cool I have those too...can't wait to use them. If I spend the $100 does that lock me into a Dev only phone or is it just a fully functioning beta version of 3.0?
So you can't just pay the 99 and be a developer?
You should, but there are some requirements I'm sure, just not sure what they are. I am pretty sure you don't need to be a company to apply though.
You also need a developer account and profile installed to the phone for it to function I believe, so just having the file won't help much by itself.