Apple has today released tvOS 27.2.1, bringing Siri AI to 2nd and 3rd generation Apple TV 4K models.
As tvOS 27.2.1 was not distributed to external testers prior to its release, we do not have any information on whether it contains any accessibility fixes for blind, deaf blind, or low vision users at the time of writing. However, as this update appears to have been released to introduce a specific enhancement, we do not expect it to contain any such fixes.