I don’t see this as that significant of a change.

The way I read the new policy is that it will be applied to people who have violated immigration law in some way.

An alien’s failure to comply with the conditions of their nonimmigrant admission or parole and an alien’s failure to depart as expected are highly relevant to this analysis

And those on dual-intent visa are fine…

USCIS reminds its officers that applying for adjustment of status is not inconsistent with simultaneously maintaining nonimmigrant status in a category with dual intent.

It’s basically adhering to the laws on the books. If you’ve violated immigration law a high hurdle will be in place to use this special pathway.

However, if you’re in the US on a dual-intent visa (e.g. H1-B) then you can continue to use the AOS pathway. This includes temporary works on L or H visas. And includes those sponsoring their spouses on K visas.