It's probably gonna made in the same style as 75150 Darth Vader's TIE Advanced vs A-Wing Starfighter. That one had Darth Vader, Tarkin, Sabine and an A-Wing pilot. Its probably gonna have the same number of figures and will use the same general formula; a TIE pilot, an important Imperial figure(somebody like Gideon), a Fang starfighter pilot and someone important from the Mandalorian side. Knowing Lego though, they would probably cheap out and include a figure we have already gotten before, like Mando or Bo Katan...