Usually the first two months of the year are full of announcements. CES and CP+ (although canceled) are good timings for new announcements. But as noted by SAR a couple of companies had no nearly no announcements at all. All we got so far from the Lecia-Sigma-Panasonic L-mount group is the updated Panasonic S lens roadmap.
Here is the list of profucts announced by all camera companies:
Nikon (6 products announced):
Nikon Coolpix P950
Nikon D780
Nikon AF-S Nikkor 120-300mm F2.8E FL ED SR VR
Nikon Nikkor Z 70-200 F2.8 VR S
Nikon Nikkor Z 24-200mm F4-6.3 VR
Nikon Nikkor Z 20mm F1.8 SFuji (5 products announced):
Fujifilm X-T200
Fujifilm X100V
Fujifilm X-T4
Fujifilm XC 35mm F2
Fujifilm GF 45-100mm F4 R LM OIS WRCanon (4 products announced):
Canon EOS-1D X Mark III
Canon EOS R5 (granted just development announcement)
Canon EOS Rebel T8i
Canon RF 24-105mm F4.0-7.1 IS STMOlympus (2 products announced):
Olympus OM-D E-M1 Mark III
Olympus M.Zuiko Digital ED 12-45mm F4 ProRicoh-Pentax: (2 products announced):
Ricoh WG-70
HD Pentax-D FA 70-210mm F4 ED SDM WRSony (1 product announced):
Sony 20mm F1.8GLeica (1 product announced):
Leica M10 MonochromPanasonic (0 products announced):
no product announced (a part of a new L-mount lens roadmap).