CC Version 4.0 (and government data)

Creative Commons is starting to work on a version 4.0 in part because:
        
        The treatment of sui generis database rights in the 3.0 licenses
        continues to be a show-stopper for many, including governments
        in Europe.  This fosters an environment in which custom licenses
        proliferate, inevitably resulting in silos of
        incompatibly-licensed content that cannot be maximally shared
        and remixed.
        
Now is the time to get involved in the CC v4.0 process:

http://creativecommons.org/weblog/entry/30676

     -- Sandro