Snaps is a (rather new) web framework growing out of the Eclipse Virgo community that (will) allow dynamic, componentized web UIs by exploiting the OSGi infrastructure. Apparently it is the heir of "Slices", the previous attempt at this.
What I am wondering is whether there is any work ongoing in looking at how JSF (2) can be combined with such an approach? Is this at all possible? If so, is there any concrete work ongoing?