Reveal = show something that was hidden previously.

Seems like the appropriate word to use about a source code leak.

The words proposed by you are suitable for describing the consequences of a revelation, while no longer containing any hint about their original cause, so using them would have lead to a more verbose sentence for delivering the same information.

It wasn't hidden previously. It was fairly well-understood.

The CC source doesn't "reveal" a single thing about anything other than Anthropic internals. It says nothing about the industry at large, certainly nothing new.

And this:

    The words proposed by you are suitable for describing the consequences of a revelation, while no longer containing any hint about their original cause