Here the section of the Apple Dev Agreement if anyone is interested:

4. Confidentiality. Except as otherwise set forth herein, you agree that any Apple prerelease software, services, and/or hardware (including related documentation and materials) provided to you as an Apple Developer (“Pre-Release Materials”) and any information disclosed by Apple to you in connection with Apple Events will be considered and referred to as “Apple Confidential Information”.

Notwithstanding the foregoing, Apple Confidential Information will not include: (a) information that is generally and legitimately available to the public through no fault or breach of yours; (b) information that is generally made available to the public by Apple; (c) information that is independently developed by you without the use of any Apple Confidential Information; (d) information that was rightfully obtained from a third party who had the right to transfer or disclose it to you without limitation; or (e) any third party software and/or documentation provided to you by Apple and accompanied by licensing terms that do not impose confidentiality obligations on the use or disclosure of such software and/or documentation. Further, Apple agrees that you will not be bound by the foregoing confidentiality terms with regard to technical information about Apple prerelease software, services and/or hardware disclosed by Apple at WWDC (Apple’s Worldwide Developers Conference), except that you may not post screen shots of, write public reviews of, or redistribute any such materials.

https://developer.apple.com/terms/apple-developer-agreement/...