Here are the specific products that now work with Matter:

Both the in-wall switch and dimmer require neutral wires but support single-pole or three-way installation. Leviton’s no-neutral switches and dimmers aren’t included in this wave of upgrades.

These aren’t the first or the cheapest Matter switches, dimmers, or smart plugs; TP-Link’s Tapo switches and dimmers are less expensive, and there are a handful of Matter smart plugs available from TP-Link, Eve, and Meross. But the D23LP does seem to be the first dimmable Matter smart plug, which is neat.

Leviton’s Decora Smart Wi-Fi products are ubiquitous in hardware stores, and it’s great to see Leviton bringing new features to existing stuff — and, frankly, to see smart dimmers that aren’t kinda ugly. More of this, please.

All four devices already worked with the major smart home platforms — Alexa, Google Home, Apple Home, and Samsung SmartThings — via a cloud integration with My Leviton, but the update means they can now be controlled locally by a Matter controller, which should mean faster response times and better reliability.

Matter supports a relatively limited set of commands for smart lighting; Leviton’s press release says that “All customers can continue to enjoy using the My Leviton app, which offers a wide range of features and customization — from tuning the lighting control performance of bulbs and fixtures with fade rates, preset light levels and minimum/maximum dim/bright adjustments, to night settings, away mode, custom dashboards and more.”