Energy figures: the leaving water after the backup heater. The heat and the COP take R2T (after the backup heater) whenever the unit has that sensor, R1T otherwise. It is the water the house gets, the heater's heat stays counted with its electricity, and the jump when a heater step switched is gone. Units without R2T are unchanged. The Hybrid names its mains voltage "Voltage (V)": the estimate now uses it when that value is ticked, as the other units' "Voltage (N-phase)".
The auxiliary sensor named for what it is. The hydro board's auxiliary sensor input carries an outdoor sensor or a room sensor, whichever the installer set in [C-08], and most definitions called it an external room sensor. It is "Auxiliary sensor (R6T) - Room / Outdoor" in every definition and translation now (#629). Home Assistant names the entity after the label: if that value was ticked, a new entity appears and the old one can be deleted.
Home page. The Today card (COP, energies, cycles) shows again without an Experimental control ticked, as it did before beta.18. No room target when the thermostat relay drives the unit: the target lives in Home Assistant then, the unit's own setpoint meant nothing. An About card in System with the sponsor link.
Supply events on the M5 boards. "Supply low" and "Supply back" only for a sag that lasts, once per episode with the lowest value seen, instead of a line every few seconds on a long thin cable.
Dutch: the 3-way valve the way installers name it.
Update: System → Firmware update → Check for an update, or the web installer. Card: 1.0.28 on HACS, unchanged.