https://wccftech.com/tvos-13-4-beta-code-hints-at-a-new-apple-tv-model-with-a12-or-newer-chip/

Apple released its first beta of tvOS 13.4 to developers for testing purposes. The company also released its first iOS 13.4 developer beta which houses some new additions like CarKey API, nine new Memoji stickers and more. Now, tvOS 13.4 beta code hints at a new Apple TV model with faster internals. Scroll down for more details on the subject.

Discovered by 9to5mac, the beta code details a new Apple TV model with the codename "T1125". the current generation Apple TV model is named "J105a" while the HD variant is named "J42d". The 'T' in code suggests that it is an internal model that is still in the works.