1) Will at least one of the Supernovas present on the roof use a new attack ?
No
Oda cuts away from the rooftop
2) Will Marco fight King and/or Queen ?
yes
3) Will Yamato and/or Momonosuke and/or O-Tama appear ?
yes
Tricky question : Will we see at least one of the Red Scabbards ?
Yes
Kanjuro will appear