Amazon has announced that the latest version of its Fire TV Stick is called the Max variant. The accessory still streams in 4K; however, its new MediaTek processor supports Wi-Fi 6 and is paired to more RAM in this generation. It is shipped with an updated remote that has the OEM's smart assistant built in.
https://www.notebookcheck.net/Amazon-takes-the-Fire-Stick-4K-to-the-Max-with-Wi-Fi-6-and-upgraded-internals.560067.0.html