The NWU says:
We've been getting questions about what the Internet Archive is actually doing with the millions of books it has been scanning.They have also posted an explainer on their website, regarding what is happening. Slides from their April 27 informational webinar are also available.
Unfortunately, "Controlled Digital Lending" (CDL) and the new "National Emergency Library" (NEL) are only the tip of the iceberg. The Internet Archive distributes copies of each book it scans in *five* different ways.
The confusion is understandable, given that what the Internet Archive is doing doesn't match what it says it does as CDL or the NEL.