I just instelled SPIP 2.0.0beta [12287] hoping that multi-site provisioning with a shared SPIP kernel (or by any other means) is an integral part of this updated version. It looks as if I was a bit too optimistic. Actually, I did not find anything new relativ to my previous version11847 - except some layout inconsistencies.
Yes but it's only the foundation, not easy to use as is. I'm doing it
with SPIP 2.0 and the "mutualisation" plugin, which integrates what
you need to create new sites on the fly, update sites and so on.