UPDATE: the page has been removed.
It seems DigitalRev wants to be first when the pre-order game for new gear will start. After the EOS 5D Mark IV and EF 24-105mm f/4.0L IS Mark II product pages, also the EF 16-35mm f/2.8L Mark III product page went online. As with the other two, there are no specs nor pictures.
All this gear will soon be announced, most likely August 25/26, 2016. Click here to see all EF 16-35mm f/2.8L Mark III rumors.