Sennheiser has offered a few hints about the Momentum 4 Wireless, a successor to the ageing Momentum 3 Wireless. The Momentum 4 Wireless will be available from August 2022 with up to 60 hours of battery life and 42 mm drivers. Sennheiser has overhauled the design of its premium headphones too, among other changes.https://www.notebookcheck.net/Momentum-4-Wireless-Sennheiser-teases-next-generation-Momentum-over-ear-headphones-with-up-to-60-hours-of-battery-life.629104.0.html
This sounds great! I haven't been 100% happy with my Air Pods Max: good noise cancellation and sound quality but heavy, hot, no power button, connects to my laptop when I don't want it to and won't connect to my TV when I want it to.