20 settings added, 3 removed and 3 renamed between iOS 18.6 and 26.6, with the path to each one. Every path below is a screen you can open in the simulator.
Area
New
Gone
Renamed
Battery
17
3
1
Display & Brightness
3
General
2
New in 26.6 20
Battery › Power Mode
Battery › Power Mode › Standard
Battery › Power Mode › Adaptive Power
Battery › Power Mode › Low Power Mode
Battery › Charging
Battery › Charging › 80%
Battery › Charging › 85%
Battery › Charging › 90%
Battery › Charging › 95%
Battery › Charging › 100%
Battery › Charging › Optimized Battery Charging
Battery › Charging › Clean Energy Charging
Battery › Battery Health
Battery › Battery Health › Maximum Capacity
Battery › Battery Health › Cycle Count
Battery › Battery Health › First Use
Battery › Battery Health › Peak Performance Capability
Display & Brightness › Liquid Glass
Display & Brightness › Liquid Glass › Clear
Display & Brightness › Liquid Glass › Tinted
Gone from 18.6 3
Battery › Battery Health & Charging › Maximum Capacity
Battery › Battery Health & Charging › Optimized Battery Charging
Battery › Battery Health & Charging › Peak Performance Capability
Renamed 3
Battery › Battery Health & Charging → Now
General › Software Update › Beta Updates › iOS 26 Public Beta → iOS 27 Public Beta