It is, perhaps, not the full disclosure the United States demanded. But tax cheats thrive in the dark, and now that darkness is no longer total.
There is a tipping point though: here is another major paper saying that tax cheats use secrecy.
Now its the duty of the US, UK and the OECD to get openness for all, Automatic Information Exchange for all, and to shine a light in the darkness for all.
It's not enough thjat there's a little light for the US. The world as a whole needs it.