User:Ilmari Karonen/GFDL relicensing

Some notes I decided not to post at MediaWiki talk:Licenses#Phasing out GFDL from the upload form for the sake of brevity. I may want to use them somewhere later:

I believe we have (at least) the following cases to consider:

License	First publication	Uploaded to Wikimedia	What happens?
GFDL 1.2 (or earlier) only	anywhere	any time	stays GFDL 1.2 (or earlier) only no matter what.
includes GFDL 1.3	on a Wikimedia project	before June 15, 2009	becomes multilicensed with CC-BY-SA 3.0.
		June 15 – August 1, 2009	not sure... the GFDL allows multilicensing here too, but the Foundation resolution isn't quite clear about what should happen in this case. Ideally, this case should not arise, but it practice it probably will, either because other projects are lazy about updating their license selectors or because users choose such a license manually.
		August 1, 2009 or later	stays GFDL, since the relicensing clause will have expired.
	outside Wikimedia	before November 1, 2008	becomes multilicensed with CC-BY-SA 3.0.
		November 1, 2008 or later	stays GFDL.

Where "GFDL 1.3" includes "GFDL 1.2 or later" or any variations thereof. Of course, all of this is irrelevant for works already multilicensed with CC-BY-SA (version 2.0 or later) or with any non-ShareAlike license.