GPL3: what's "COPYING" now known as?

[Alan Mackenzie]

Hi, Emacs!

In software released under GPL2, the license itself is typically put
into the distribution in a file called COPYING.

What is the canonical name for the GPL3 to be?  Is it going to be
"gpl-3.0.txt" (as downloadable from
http://www.gnu.org/licenses/gpl-3.0.html) or "COPYING3" or some other
nice name, or is it going still to be called "COPYING"?

-- 
Alan Mackenzie (Ittersbach, Germany).