during the stream today they unveiled the new S-Foils the B-Wings are getting in Hotshots and Aces since i don't know how to get a pic from that stream i will just list the text.
S-Foils Open: "After you perform an attack you may spend your target lock on the defender to perform a bonus attack with a cannon upgrade you have not used against that ship" the open wings also allow the B-Wing to do linked barrel roll and target lock action.
S-Foils Closed: no text effect but allows the B-wing to do a linked Barrel Roll and Evade action and also gives the B-Wing a red Reload action
both open and closed have this text: "Before you activate, If you are not critically damaged you may flip this card"
honestly i think it gives the B-Wing some dangerous options with more actions more directions it can branch out in.