There's a big debate about it in Technical Discussion as achow101 mentioned.
Some short videos from Matthew Kratter to get you up to speed on the matter more quickly:
From discussions I have read elsewhere, none of the videos he has posted are actually accurate and supposedly he is significantly overexaggerating/being hyperbolic. I cannot attest this as I have not watched them myself.
the announcement was made a couple days ago by the devs and the PR will be merged. We will see.
There is no such announcement that anything will happen. I would happen to know, as I am one of the maintainers.
The document that was published a few days ago was a draft of one that had intended to be "official" from the project, but it did not have enough agreement amongst contributors to adopt it as such. The author then published the draft. It is neither an announcement nor the project's "official" stance on the topic.
Regardless, continued discussion of OP_RETURN limits is off topic for this thread and I will be removing any further posts on the subject. Go to the myriad of other threads/forums where this is being discussed.