Page with uplift information from Tor Browser 14 to mozilla-central before reaching esr140. Patches need to land before May 22 to ride the train normally. For 140 the effort focuses on privacy.resistFingerprinting and everything that doesn't require us to land the Tor proxy code.
This page is meant to have a more editable version of Tor uplift priorities.
Bug 1958496 is meant to track the progress on the project.