The developers built a remote-controlled starship mini-pet based on the design from Vanguard Squadron in Star Wars Squadrons. The SWTOR team worked closely with EA Motive on the design, but also made sure to be accurate to the universe of SWTOR which is thousands of years older. The mini-pet is called the Model Corellian Stardrive Vanguard.
You can get this pet for free if you log in between October 20 through November 17. That’s literally it. All you have to do is login during that time. As a reminder, if you want to grab the soundtrack for Star Wars Squadrons, you can do so on various digital services like Apple Music, Spotify, and Amazon. Squadrons also features full cross-play. You can read about that and more here.