We have a firmware update in testing to improve shut down (S5) drain. For s0ix, we are investigating firmware paths to reduce power consumption. The card itself actually does go to into a low power state, but the USB4/TBT4 retimer stays in a higher power state. That is something we were able to fix in a combination of hardware and firmware on the new 12th Gen Intel Core systems for s0ix/Modern Standby. We're investigating paths to improve this that would work for 11th Gen as well, but nothing final yet.
Congrats on the launch! FW is on my shortlist for my next laptop.
Would you consider having someone on the team do a more in depth technical write-up of the work that went into the battery life optimization? I'd personally be very interested in reading that as a long time Linux laptop user.