I will happy to collaborate, but how?

For users I suppose testing upcoming(?) images? in that case should we wait for Nokia releasing first the new harmattan device, or some preview will be available before?

For developers I guess porting maemo5 community software to harmattan? in that case I'd like to know details about the harmattan middleware/gui.

IIRC the gui will be changed deeply, new window manager qgraphicsview based, system menu and applications qt based right? in the new DE will maemo5 hildon apps will be compatible (reusing XAtoms, etc.)? how much the new DE shares code with meego touch framework?

And what's about the middleware? will we see icd, sscd, csd, etc? or harmattan is going to get some meego stuff (ofono, connman, etc.?)

(the two questions are there to understand better if nokia (on the next harmattan device) and community developers (on the n900) are going to waste time, or their efforts, at least in some parts, will be reusable on meego)

And finally I just guess that harmattan will have some closed nokia parts, and AFAIK there is no public and documented way to produce a maemo rootfs from scratch, so this community harmattan edition needs anyway Nokia "semiofficial" support for the n900 adaption, will that be assured in some way, or simply nokia will release to the community the necessary binary packages, code, tools and documentation?

Sorry if some question may seem stupid or have obvious answers, but it's not easy to gather all the information, did I lost a wiki page?

Thanks.