"Set within the timeline of The Mandalorian, this new live-action series from executive producers Jon Favreau
and Dave Filoni will intersect with future stories and culminate into a climactic story event."

The series is theoretically set during the events of The Mandalorian, beginning in the year 7986 (9 ABY).

CURRENT INTEL (as of March 2024)
This show seemed to have been cancelled or at least shelved after the absurd firing of its star, Gina Carano.
Current information from Lucasfilm says that "no scripts were written, and that some of what was planned
for the series will be figured into future episodes of the "next iteration" of The Mandalorian."
Nevertheless, this show has not been officially cancelled and may in fact still be in pre-production.

REPORTS, RUMOR, & SPECULATION
Gina Carano Reveals Rangers of the New Republic Info