Google is preparing to replace RCS with MLS

The information I have is from a Spanish paper, which you can read with google translate, or find an English language source.
<https://www.elespanol.com/elandroidelibre/noticias-y-novedades/20240705/google-messages-cambia-siempre-nuevo-protocolo-mensajeria-proteger-mensajes/868163289_0.html>
Google and the RCS protocol have been part of the discourse with which they have been attacking Apple on numerous occasions , and now the technology giant intends to replace it with a more advanced one with some important functions. SMS, although they are not used as much in Spain as in the United States, will now be much more secure with the new protocol .
The RCS protocol became essential for the Android text messaging platform in 2019, and Apple recently added support for it with the update to iOS 18 . The only drawback it has is that it requires both mobiles or devices to have the same platform to ensure end-to-end encryption of messages; an essential measure for privacy.
To cover this gap, Google announced last year support for the MLS (Messaging Layer Security) protocol that brings end-to-end encryption to Android devices. MLS is an enhanced protocol developed by the Internet Engineering Task Force (IETF). Its objective is to ensure communication between apps and platforms always with the maxim that individual and group chats are effectively encrypted.
... continues at the link.
Further info:
<https://www.androidpolice.com/google-messages-messaging-layer-security/>
Google Messages is preparing to implement its new messaging protocol
Summary
    * Evidence suggests Google Messages will soon add Messaging Layer Security (MLS) support for end-to-end encryption.
    * After Google pledged support for the standard last year, MLS is set to become the default security layer for encryption once fully implemented in Messages.
    * Adoption outside of Google Messages remains to be seen, but MLS looks to unify encrypted messaging across platforms and services by implementing an encryption standard that all messaging apps can share.
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Cheers,
        Carlos E.R.