The Canon EOS 7D Mark III will not be announced in 2018 as rumored before. It is likely to be announced in early 2019. According to CR, Canon EOS 7D Mark III and all upcoming prosumer DSLR cameras will focus on more video capabilities, to match the likes of Sony and Panasonic.
Source said that Canon no longer wants to lose the “spec war” with their future camera releases. This way of thinking is trickling down to various Canon subsidiaries around the globe to prepare for the changes coming.