No new Logitech MX master 4, but upgraded MX master 3 with logi bolt : r/MouseReview
Should I Wait for Logitech MX Master 4? Here's What We Think
Logitech MX Master 3 Kabellose Maus, Bluetooth und 2.4 GHz Verbindung via USB-Empfänger, 4000 DPI Sensor, Ultra-schnelles Scrollen, Für alle Oberflächen, 7 Tasten, PC/Mac/iPadOS - Dunkelgrau: Amazon.de: Computer & Zubehör