Canon is expected to announce a high end, full frame mirrorless camera, the EOS-90D and EOS-7D Mark III in the next 6 to 12 months. In addition, a couple of 'L' lenses are also expected, perhaps around the time of the 2018 Photokina Show in September in Germany.
My guess and hope is one of the Big White lens will be the EF 600mm f/4DO BR. Canon showcased that lens in their Expo back in September 2015 in New York City. Currently, the EF 400mm f/4 DO IS II is my favorite DO lens and accompanies me on all my wildlife photography tours but sometimes I can use a bit more focal length.
A few Canon camera bodies have also shown up as the company filed registration papers with certification authorities in various countries.
Canon DS126721 is registered with overseas certification bodies. This is most probably a new Rebel camera with built-in WiFi and Bluetooth.
Two DSLR test cameras are code named K436 (EOS-80D Mark II or EOS-90D?) and K437 (EOS-7D Mark III?). Additional mirrorless cameras are code named K424, K433 and EC 811. All the new cameras come with the DIGIC 8 processors.
K424 will be a 30MP full frame mirrorless camera with a brand new sensor, dual card slots and a burst rate performance close to the EOS-1D X Mark II DSLR camera. DIGIC 8+ processor will power the camera and DPAF 4K will come standard with the 4K video. Announcement is expected in Q3 to late 2018 or early 2019.
K333 will also be a full frame mirrorless camera but with less features and a lower price.
EC 811 may be the EOS-M5 Mark II APS-C mirrorless camera.
Sadly, I am not convinced the upcoming high end, Canon full frame mirrorless camera will fit my needs unless it comes with the EF mount. These are early days and there is little point in further speculation. Keep checking back for the latest information and development.