Reliable info:
8 January: Panasonic will announce the GH5s
8 January: Sony has a press conference at the CES show but they might NOT announce anything Alpha related
14 January: Samyang has a major presentation in Dubai. They might announce the new lens they teased this week
Sometimes in January: VensuOptics should announce the new Laowa 9mm f/2.8
February: Olympus will announce the E-PL9 before the CP+ show start in late February
February 14: Fuji will announce the X-H1 and maybe some new lenses too
February-March: Zeiss will announce the 25mm f/2.4 Loxia FE
Unclear:
Nikon might announce the new FF mirrorless system cameras at CP+ (or they might just tease something)
Canon should announce some more serious mirrorless system camera later this year and not at CP+. At CP+ we might get a new entry level EOS-M