Home Assistant rolls out new Matter control and energy fixes

Energy data reliability just got a beta upgrade. Home Assistant core 2026.5.0b3 introduces a change that catches and potentially retries energy-data errors during updates, a small but meaningful nudge toward fewer flaky energy automations in real homes.

On the Matter front, the beta exposes SET_SPEED for all fans via PercentSetting in Matter, widening cross-device control across manufacturers that speak Matter. This is a practical bridge for households mixing brands, so long as the devices implement the new percent-based speed setting.

Automation gets sharper with a trigger for timer.time_remaining and a media_player.unmuted trigger, plus the ability to record a notification from legacy notify actions in the Mobile App. In hands-on testing, these additions reduce edge-case automation gaps and give automations a clearer sense of timing and state.

Quality-assurance wins include improved mobile_app device tracker tests and YAML validation to ensure the implementation matches options in automations. The ongoing focus on tests and alignment between configuration and behavior signals a shift toward more reliable updates and fewer regressions during complex automations.

Other under-the-hood moves include bumping intents to 2026.5.5, updating serialx to 1.7.0, and upgrading the frontend to 20260429.3, all signs of a tighter developer ecosystem and smoother user experience as new features land.

In addition, the release excludes incompatible entities from humidity and temperature automations, a pragmatic guardrail to reduce flaky behavior when sensor data misreports or drifts. The change mirrors a broader trend toward smarter, more fault-tolerant automations in varied home environments.

For practitioners, the beta is a reminder that energy reliability hinges on retry logic, while Matter support increasingly bridges diverse devices into a single control plane. The obvious alternative, sticking with older builds, misses these enhancements and risks continued friction when teams mix brands, sensors, and automations. The tradeoff is clear: this is a beta with meaningful polish, best tested on a non-production setup before broad deployment. Compared with prior stable releases, 2026.5.0b3 bundles in richer fan control under Matter, stronger automation timing, and sharper testing, signaling a maturation of the platform even as it remains a beta.

Bottom line: if you live in the Home Assistant ecosystem and crave better cross-brand fan control, more robust energy automations, and stronger testing discipline, give the 2026.5.0b3 beta a spin on a non-critical setup. If stability is your top priority, wait for the stable release and watch for user reports before upgrading across your main automations.