Primary source / Official news post is at https://www.fsf.org/news/fsf-turns-forty-with-a-new-president-and-a-new-campaign

Regarding LibrePhone:

In the afternoon, FSF executive director Zoë Kooyman announced an exciting new project: Librephone.

Librephone is a new initiative by the FSF to bring full computing freedom to mobile computing environments. The LibrePhone Project is a partnership with Rob Savoye, a developer who has worked on free software (including the GNU toolchain) since the 1980s. "Since mobile phone computing is now so ubiquitous, we're very excited about LibrePhone and think it has the potential to bring software freedom to many more users all over the world."

No links or references to the project. Seemingly no page on the website, or on the campaigns page [yet].