Amazon has put up a listing for the 8Bitdo Zero 2 Bluetooth Gamepad, revealing a few details. The controller comes in three different versions, which you can pre-order with the following links on Amazon: Pink Edition, Turquoise Edition and Yellow Edition; furthermore, you can find images of all three located just below this paragraph (more photos can be found in the aforementioned listings).
The 8Bitdo Zero 2 Bluetooth Gamepad has a weight of just 20 grams. It also comes installed with a lithium ion battery that provides around 8 hours of usage per full charge. The controller uses X-input or D-input to connect to the Nintendo Switch, PC, MacOS and Android platforms.
The 8Bitdo Zero 2 Bluetooth Gamepads currently have a placeholder release date set for Dec. 31, 2019, in the U.S. region.