Man, I was hoping it was a cock up, but having looked now, and looked through past days, I'm really doubting it. :\

EDIT 1: For ease of viewing I tossed the comparison up on imgur: http://imgur.com/kBHJ0eq

EDIT 2: Squinting, it looks like they still have the 2-7-2014 date running in the gap between the 2nd & 3rd panel, but it's copyright is clearly from 1990-something. So, it's clearly intentional, I now wonder if it is Yahoo or S.A. himself providing the alternate.