So... if you head over to We Love Fine, you'll notice Derpy shirts are back. All named in all of her Derpy glory.
I can't begin to speculate on what this means, I have less than no new information on the situation."Derpy" becomes a more apt name for everything the more time goes on, because... gah. More information as it develops, pony fans. Stay tuned.
Note: The primary shirt being referenced here is this one. Yesterday it was called "cutie bags".