I received the following message but I am not sure that it is a real message or is spam. Is it it really a message from SE sent to all participants?

"Stack Overflow and Stack Exchange are ending support for third party OpenID providers. Your immediate action is needed in order for your account to stay active.

Please click to add an email and password credential to your account.

Alternately you can associate your account with Google or Facebook via the same link.

OpenID will be no longer supported on July 25, 2018. If you haven’t updated your account before then you will lose access to your account."