bug#22025: Emacs 25 corrupts Emacs 24 .emacs.desktop.

[Drew Adams]

Again, apologies for not really reading the bug thread.

Just wondering whether this format change will be mentioned
in NEWS, and what the reason for the change is.

In NEWS, I find only this when looking for "desktop":

*** Partial state of the eww buffers (the URIs and the titles of the
pages visited) is now preserved in the desktop file.

Is that it?  Does just _adding_ info to the file really
change the format in an incompatible way?  If so, has it
been fixed now, so that future additions (i.e., without
changes that also change the existing fields) don't result
in an incompatible change?

If this NEWS entry is in fact the announcement of the format
change, then please consider changing the wording to make
clear that this is not just a benign addition of info but
is an incompatible format change for the file.

(A priori, I have nothing against a change.  But it would
be good to know what this is about.)