I think it's more of "clearing the decks" for stuff that didn't make the cut for WWDC. I assume WWDC is going to be all about AI and they couldn't find a good spot to put this announcement. "Clearing the decks" isn't a very kind way to refer to this accessibility tech since Apple has always been better than almost everyone else when it comes to accessibility. I don't see this as "we don't care, just announce it early" as much as "we can't fit this in so let's announce it early".