Home Assistant Daily: AWS S3 Backup Enhancement and Sonarr Service Overhaul

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Good morning. This is Home Assistant Daily for February 26th, 2026.

The development team merged 20 pull requests yesterday, focusing on backup improvements and integration enhancements.

Kamil Breguła merged the AWS S3 prefix support update, adding the ability to organize backups within a single S3 bucket using custom folder paths. This addresses a long-standing need for users running multiple Home Assistant instances who want to share storage without conflicts.

Liquidmasl completed a major Sonarr integration overhaul, replacing sensor attributes with dedicated service calls. This breaking change deprecates the old approach while providing more robust functionality for managing media automation. A follow-up patch was also merged to address post-merge cleanup.

Luca Angemi added minimum state duration filtering to the history stats sensor, giving users better control over statistical calculations by excluding brief state changes.

Several new device integrations were expanded. Przemko92 added fan support to the Compit integration, while Joostlek added power sensors to Zinvolt. Jamie Magee contributed platform tests and diagnostics capabilities to Aladdin Connect, improving the integration's reliability and troubleshooting capabilities.

Infrastructure improvements included Amit Finkelstein's new mount reload action for HassOS and Tom Quist's fix for ingress compression issues that were breaking server-sent events and streaming responses.

The development branch was also bumped to version 2026.4.0 development, indicating the 2026.3 beta has been released.

What's next: The team continues expanding Matter support with vacuum improvements and backup platform coverage requirements are now enforced.

That's your Home Assistant development update. Back tomorrow with the latest changes.