Matter is an application-layer connectivity standard developed by the Connectivity Standards Alliance (CSA) that allows smart home devices from different brands to interoperate over IP-based networks including Wi-Fi, Ethernet, and the Thread mesh protocol. It matters because it ends the fragmentation problem where proprietary smart home ecosystems (Apple, Google, Amazon, Samsung) refused to communicate with each other — a single Matter-certified device can be added to all four simultaneously via multi-admin. The key insight practitioners need: Matter is not a radio protocol — it is a language that runs on top of Wi-Fi, Ethernet, or Thread; and Thread is not a replacement for Matter but the preferred low-power transport for battery-operated devices.
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This topic spans 18 focused tables and 150 indexed concepts, 108 flashcards. Below is a complete table-by-table outline of this topic, spanning foundational concepts through advanced details.
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Table 1: Matter Version Timeline
Each Matter specification release follows a roughly biannual cadence. Understanding which version added which device types tells you whether your hub and device firmwares are compatible and which features are available — manufacturers are often multiple versions behind the current spec.
| Version | Example | Description | |
|---|---|---|---|
Released Oct 4, 2022 | • First public release • supported lights, plugs, switches, door locks, thermostats/HVAC, window coverings, basic sensors (motion/contact), media players, and bridges. | ||
Released May 18, 2023 | • Maintenance release — no new device types • focused on bug fixes, improved Intermittently Connected Device (ICD) handling, developer certification improvements | ||
Released Oct 23, 2023 | Added nine new device types: refrigerators, dishwashers, laundry washers, room air conditioners, robotic vacuums, smoke/CO alarms, air quality sensors, air purifiers, and fans. | ||
Released May 8, 2024 | Added kitchen appliances (ovens, microwaves, cooktops, extractor hoods, laundry dryers), EV charger (EVSE) support, water management devices, plus Scenes and Command Batching. | ||
Released Nov 7, 2024 | Major update: HRAP (Home Routers and Access Points) as Matter device type, Enhanced Multi-Admin, solar panels, battery storage (BESS), heat pumps, water heaters, expanded EVSE, thermostat presets, ICD Long Idle Time (LIT). | ||
Released May 7, 2025 | Minor update: NFC onboarding, multi-device setup QR codes for bulk commissioning, Enhanced Setup Flow (ESF) for localized terms. | ||
Released Aug 11, 2025 | • Minor security and networking update • standardized behaviors • required HRAP/NIM devices to support Thread 1.4 and address at least 150 devices | ||
Released Nov 20, 2025 | Major update: cameras (security cams, floodlight cams, video doorbells, intercoms via WebRTC), soil sensors, enhanced closures (modular panels), energy tariff device type, full TCP transport support. | ||
Released Mar 2026 | Minor refinement: multi-stream camera support, AV settings stability, streaming management cluster improvements. |