Apple Seeds Fourth Beta of tvOS 15.1 to Developers

Can you program the Power button to Learn IR now?

[SPOILER="tvOS 15.1 Beta 4 Release Notes"]
Overview
The tvOS 15 SDK provides support to develop tvOS apps for Apple TV devices running tvOS 15.1 beta 4. The SDK comes bundled with Xcode 13, available from the Mac App Store. For information on the compatibility requirements for Xcode 13, see Xcode 13 Release Notes ('https://developer.apple.com/documentation/Xcode-Release-Notes/xcode-13-release-notes').

CoreData
Known Issues

* NSExpression will immediately forbid certain operations that have significant side effects like creating and destroying objects. Additionally, casting string class names into Class objects with NSConstantValueExpression is deprecated. (84017178)
Workaround: Pass temporary objects to NSExpression in the context parameter of expressionValueWithObject:context: ('https://developer.apple.com/documentation/foundation/nsexpression/1410363-expressionvaluewithobject'), or with NSPredicate the substitutionVariables parameter of evaluateWithObject:substitutionVariables: ('https://developer.apple.com/documentation/foundation/nspredicate/1407759-evaluatewithobject'). You can create a derived predicate with all the substitution variables replaced (bound) using withSubstitutionVariables(_:) ('https://developer.apple.com/documentation/foundation/nspredicate/1413227-withsubstitutionvariables') on an existing NSPredicate so that code using the object can continue to use a simple evaluate(with object: Any?) invocation.


[/SPOILER]

Don't expect anything to change between now and release