Amazon has put up a listing for the Pokemon Expressions Enhanced Nintendo Switch Wireless Controller, revealing a release date. According to the product page, the gamepad will be coming out on July 25, 2020, in the U.S. region. If you are interested, you can pre-order with the following link from the online retailer:
Play your favorite Nintendo Switch games like a pro with this officially Licensed POWER A enhanced wireless controller. Built for comfort during extended gaming sessions, this Bluetooth wireless controller features motion controls, mappable advanced gaming buttons, and standard ergonomic layout. Enjoy up to 30 hours of game play with new alkaline batteries or add your own rechargeable batteries. Includes two AA batteries for up to 30 hours of gameplay.