Here are images and descriptions of 2017 lego sets:
This video will showcase new figures:
The Upcoming (ANNOUNCED) sets are:
70347: Bike from the King's Soldiers
70348: Lance's Cruiser
70349: Ruina's Vehicle
70351: Clay's Blaster Jet
70352: Jestro's Monstrous Monster Vehicle
As you can see, next year they will be fighting plant and seaweed monsters.
Captain America Jet: Ms. Marvel (Kamala Khan), Captain America (Sam Wilson), Unknown Villain.
This set is following the all new marvel/avengers so I would speculate a Serpent Society Member.
Lola Set: Agent Coulson, Iron Man, and Detroit Steel.
Duel of the Fates: Quinlan Vos, Darth Maul, and Obi One Kenobi
Desert Skiff: Han Solo, Chewbacca, Weequay, and Boba Fett
Landspeeder: Luke, Obi One, C 3P0, and Tusken Raider
Yodas Jedi Starfighter: Yoda, R2 D2, maybe Force Priestess, and Ghost Quinlan Vos
Phantom: Thrawn, Blind Kanan, and Chopper
Rouge One Battle Packs: Rebel and Imperial
Ulimate Collector Snowspeeder
Rowan (Ghostbusters: Answer the Call)
Lego City Undercover
Pirates of the Caribbean:
Dying Gull: Jack Sparrow, Captain Salazar (Ghost look with half of head missing), Carina Smith, Will Turner (Davy Jones/Knarly), Henry Turner, Ghost Pirates. Large $250 Ghost Ship
Dc Superhero Girls:
Characters Include: Batgirl, Harley Quinn, Catwoman, Killer Frost, Cheetah, Starfire, and Wonder Woman
Largest set is Highschool.