According to the email that Apple sent to users, the old operating systems affected this time include: iOS 4.3.5, macOS 10.8.5 and Apple TV 4.4.4 and previous versions. Apple said that after June 30, use these Users of the legacy system can still access iTunes and the App Store, or they can re-purchase and download previously purchased products, but only use the payment method previously used and cannot make changes.
These operating systems are indeed called 'Ancient'. iOS 4.3.5 was released in 2011, OS X 10.8.5 was released in September 2013, and Apple TV 4.4.4 is only available in second and third generation Apples. It runs on TV TV, and the Apple TV 5 system was released as early as March 2012.