No new Logitech MX master 4, but upgraded MX master 3 with logi bolt : r/MouseReview
Amazon.com: Logitech MX Master 3S for Mac Performance Wireless Mouse with Ultra-Fast Scrolling (Pale Gray) Bundle with 4-Port USB 3.0 Hub (2 Items) : Electronics
Buy it right now or wait for Mx master 4? - YouTube
Logitech MX Master 3S for Business, Graphite - mouse - Bluetooth - graphite - 910-006581 - Mice - CDW.com
Amazon.com: Logitech MX Master Wireless Mouse – High-precision Sensor, Speed-adaptive Scroll Wheel, Thumb Scroll Wheel, Easy-Switch up to 3 Devices : Electronics
Amazon.com: Logitech MX Master 3 Advanced Wireless Mouse and Knox 4-Port USB Hub Bundle (2 Items) : Electronics
NEW LOGITECH MX MASTER 3S PERFORMANCE WIRELESS MOUSE PALE GRAY PN: 910-006558 97855174796 | eBay