The rumors have always been fluctuated for the highly anticipated Canon 5D mark IV camera. For instance, last time we saw a retailer source suggested that the camera would come with 30Mp resolution and so many rumors like this kept coming.
Surprisingly the product page doesn’t contain any specification related to upcoming products expect products name.
However, pictures and specs are still unavailable, but along with the Canon 5D mark IV the Canon EF 24-105mm f/4.0 L IS USM Mark II and also EF 16-35mm f/2.8L Mark III product page went online at retailer DigitalRev. And, possible announcement time of Canon 5D MARK IV along with these two lenses is August, 2016 (Probably last week of the August).