In addition to the mirrorless EOS M6, Canon will announce also a new EOS 77D and Rebel T7i DSLR cameras together with a new EF-S 18-55mm f/4-5.6 IS STM lens for the CP+ show at the end of the month:
Canon EOS 77D
Canon EOS Rebel T7i
Canon EF-S 18-55mm f/4-5.6 IS STM
Canon BR-E 1 (probably a remote controller)
Canon is also rumored to be working on a new EF 50mm f/1.4 Nano USM lens that will be announced in late 2017 or early 2018.
Via Nokishita, Canonrumors