> In other words, GFDL-licensed sites like Wikipedia have a special,
> nine-month window in which they can relicense their content to the
> Creative Commons attribution-sharealike license.
I don't get it. You say "in which they can"... but hasn't the relicensing already happened by virtue of the FSF's new wording? I can download all of Wikipedia, put it on my own server, upgrade from GFDL 1.2 to GFDL 1.3 using the "any later version" clause, relicense to CC-BY-SA by this new clause, and viola, all of Wikipedia's content is now CC-BY-SA.
It's still their choice is how to handle future content, but it certainly seems like all existing content has just effectively been relicensed. As long as I do what I said above, within the next 9 months.