ICEcore looks interesting but their is very little action in their open source community (look at their forums). I also see that they were launched on SourceForge in October of last year under the Common Public Attribution License so they may just be getting started. Tying into the OpenSUSE community could spark their momentum though. I would be curious to see if anyone is using ICEcore and if so what is their experience like.
I suspect that the real driver for Novell was the commercial products that Sitescape offers like reason for their interest was for the collaboration products like their web conferencing software, Zon.