https://wccftech.com/an-unreleased-version-of-the-siri-remote-for-apple-tv-referenced-in-ios-16-beta/

Apple announced iOS 16 at its WWDC 2022 event earlier this month. The update packs a boatload of forward-facing additions and changes. In addition, the company has now sent the second round of betas to developers for testing purposes. Upon testing, a developer has found references to a new version of the Siri Remote for Apple TV in iOS 16. Scroll down to read more details on the subject.

According to the latest findings, the first two betas of iOS 16 feature strings for "SiriRemote4" and "WirelessRemoteFirmware.4". The two references in the iOS 16 beta do not belong to any current model of the Siri Remote, according to Aaron613 from AppleDB. He states that the original Siri Remote is denoted as "SiriRemote" and the following redesign with a white circle is identified as "SiriRemote2". Last year's redesign is identified as the "SiriRemote3". What this means is that the latest reference of "SiriRemote 4" poses a possibility of a new version for the Apple TV.