After reports that Valve had received shipments of the accessory, a Steam Controller review has appeared. Deleted ahead of a likely release date update, a YouTuber praised its responsive dual trackpads. Even so, the price may make it more difficult to discount the Steam Machine.
FWIW… Bazzite has full Steam Input support for mine… It even has a picture of my specific controller.
Steam Input works fine. I’m specifically talking about their custom software for the controller, which is also used to update firmware.