Even though there's a "5" in its name, this product represents the introduction of the new Deco line from TP-Link. The goal here is to provide whole home Wi-Fi that will provide users with "faster and more reliable Internet connections" throughout their home.
The main TP-Link Deco M5, powered via USB-C, operates similarly to the other mesh solutions. It's like a regular router, except you can use several of them together to form a unified mesh network over your home. Each unit is AC1300, so it won't be quite as fast as the AC2200 on the Velop. Where things get a little more interesting, however, is with the Deco M5 Plus Router with Powerline.
As its very descriptive but not terribly creative name indicates, this variant adds powerline networking to the mix. The power adapter serves double duty as a powerline adapter too. This way, if a wireless signal can't quite reach your other M5 unit in the basement or another far away corner of your home, you can leverage powerline to your advantage.
No word on pricing and availability yet, but you can check out the full press release below.