As mentioned in https://forums.imore.com/threads/watchos-11-0-1-is-out.467904/post-3336062, it’s better but not great.Looks like 11.0.1 fixed the battery issues but I'll know for sure tomorrow. I pulled my watch off the charger before bed last night (1st gen Ultra) and currently at 72%. was at 75% much earlier in the day before.