iOS could eventually support RCS; Apple reportedly having "discussions"
Published by a user on Reddit (via 9To5Mac), the slide in question was reportedly presented at a GSMA event originally held on October 24th. Details are pretty vague but it clearly states that Apple has “engaged in discussions” with both the GSMA and international carriers about the possibility of “including RCS in iOS.”
If Apple chooses to integrate the technology, it would help the company better prepared for the “post-2G, post-SMS future.” Alongside this, the move would also improve the communication experience between iMessage and non-iMessage users. After all, unlike SMS, RCS supports read-receipts, typing indicators, group chats, and much more.
Considering the lack of details, it’s likely that Apple’s discussions with the GSMA are still in the very early stages. This means that, even if iOS integration is planned, it probably won’t happen for quite some time.