Yes. They never say it outright, but this is the way their PR statement begins:

"The Libra Association announces the adoption of a new name and the recruitment of key executives, reinforcing its organizational independence. Now transitioning to the name “Diem”, which denotes a new day for the project, the Diem Association will continue to pursue a mission of building a safe, secure and compliant payment system that empowers people and businesses around the world."

https://www.diem.com/en-us/updates/diem-association/

It was my first thought! Maybe.