That's a big deal then. So far I'm not aware of any controllers that have all of the following:

• Analogue triggers
• Gyro input
• Back buttons
• Xbox layout (preferred)

The dual shock is close, but no back buttons and not my prefered layout. All the Nintendo clones have digital triggers, and almost none have gyro input that steam can use. This will make 8bit the best possible Steam Deck companion until a proper Steam Controller 2 comes out.

Edit: This would also add the ability to map extra buttons to new functions instead of a duplicate of the buttons that already exist. I'm waiting to hear the details but I'll likely buy one if all this is true because I haven't seen anything else offering this level of functionality.