Yesterday, Apple said that developers can now update their Apple Push Notification Service (APNs) and Developer ID media certificates. Apple Worldwide Developer Relations Media Certificate (G4)
APN SSL certificates are now issued by a new media certificate (Worldwide Developer Relations G4 sub-CA) specifically for APNs.
This certificate can be used to send push notifications to apps (including VoIP), complications, Safari websites, and Apple “Wallet” passes.
Apple Developer ID Media Certificate (G2)
The digital certificates that developers use to sign software and installation packages on macOS are now issued by the new Developer ID media certificate, which expires on September 16, 2031. The newly issued Developer ID certificate associated with the new media certificate can be used to sign software on Xcode 11.4.1 and later.
If the developer is running Xcode 13.2 or later, the updated certificate will be downloaded automatically when the developer signs the software after January 28, 2022. If developers are using an earlier version of Xcode, they can download the certificate manually, or create a certificate that is compatible with previous versions of Xcode. The developer’s existing certificate will continue to be valid until it expires or is revoked, whichever comes first.