Hi all,
Sorry, I don\'t know for sure (I do my development for the stock Sharp ROMs), but since OZ uses Opie I expect the Opie SDK would be what to use for developing Opie-based OZ apps.
I think the SDK is just for Opie, so it would probably work with OE, but I don\'t much about Open Embedded, so I can\'t say for sure. You peaked my curiousity, so I did some looking around handhelds.org and this message board, but it\'s not real clear to me what the status of OE is yet.
Cheers,