Here is an updated list of registered/not yet announced Canon, Nikon, Olympus, Fuji and Leica cameras:
PC2355
PC2358 (successor to either the EOS M5 or EOS M6)
PC2367 (successor to either EOS M100 or EOS KissM (EOS M50))
N1838
N1845
N1847
N1849
N1850
IM015
UC-92
FF180005 (the new GFX 100S)
NEW: INSTAX MINI HM1
7741 (Leica V-Lux)
ACA-DC17
Via Nokishita