Rumor has it, this guy is working on it:

Sorry. that's pretty damn funny. Keeping that.
Doesn't look like there's one just yet. Hopefully it's better than the normal logographic turd the W3 throw out there...

If they ever create one, it will probably be something just as hideous as the 'valitator badges':

Maybe Apple could lend the dogcow...

@northbay haha! I'll wait until blue hat guy is done.

Typebattle!

Oh, here it is. I put well over 45 seconds of effort info this design.

and it's still better than what the W3 will turn out!
We all know it will be one of those ugly ass validator badges...

I'll suggest to the W3C working group that Erik van Blokland be asked to design any official WOFF related visuals.