No more details were given at Disneys Investors Convention on December 10th but the image shows an X-Wing fighter and as we know Rogue Squadron was a Rebel Alliance starfighter squadron in the original Star Wars.
The spin off movie Rogue One: A Star Wars Story was named after this call sign.
That film which was well received by fans was based before the original Star Wars movie, no this could likely be about the formation of the squad and go into more detail about that time in the first film, with crossovers.
The movie isn't set for release until December 2023 and joins the already announced movies being directed by Thor Ragnorak director Taika Waititi.