Well, I suppose it was only a matter of time; There are two more (very different) possible new stormtrooper designs on Indie Revolver.
UPDATE #1: Making Star Wars has more information on the helmets, including a link to The Clone Wars on the second one, plus another picture of the first.
The first of the two does have some resemblance to the Tom Hodges version, but really, who knows? (Note: Hodges has deleted his drawing from Instagram.) It seems to me that stormtrooper helmets, even physical ones, are probably one of the easiest things for savvy and creative fans to fake, so I’m not counting on much of anything here.
UPDATE #2: Latino Review‘s contribution: Chrome stormtroopers with the ability to cloak.