Brianna Laugher wrote:
3. In order to grant their obvious wish to release these images under a
free license, we add GFDL and CC-BY-SA-2.5 to all of these images
4. We leave {{OwnWork}} and change it into a notice that the license
information below is assumed, and if the author doesn't agree, (s)he
should write a note on the talk page or fix it directly
    

That's not a bad idea actually. As long as we leave {{OwnWork}}.
With all our bots running around now there should be far fewer cases.

Probably I would just make it {{GFDL}} though. I think it'd be
stretching it to put a CC license, just because we like them. :)
Whereas it's much more likely they're aware that Wikipedia is GFDL.

At the moment {{own work}} actually says it is depreciated to NLD. :|
I rather disagree with this but I understand the need for it. These
OwnWorks just hang around forever...

Brianna
  
At the German Wikipedia a similar template ({{Bild-wahrscheinlich-GFDL}}, "Image likely to be GFDL") has been deleted recently because it was not clear in some cases whether the user really wanted to release it under this license. de:User:Historiograf stated that one should not simply assume a license under which a picture is released, especially it a user did not understand the "legal technicalities".

The whole discusson can be found at http://de.wikipedia.org/w/index.php?title=Wikipedia:Urheberrechtsfragen&oldid=17884025#selbst_erstellte_Bilder_.3D_automatisch_GFDL.3F

Matt