Sky Reign is an Autobot combiner from the Generation 1 continuity family.
Sky Reign has an awesome name. He is the combined form of five Autobots:
Sky Lynx
Hound
Smokescreen
Trailbreaker
Wheeljack
Toys

Sky Lynx (Voyager, 2016)
Hound (Deluxe, 2016)
Smokescreen (Deluxe, 2016)
Trailbreaker (Deluxe, 2016)
Wheeljack (Deluxe, 2016)
Wreck-Gar (Legend, 2016)
Sky Reign is a combiner made up of four Deluxe Class figures (Hound, Smokescreen, Trailbreaker, Wheeljack) as limbs, a Voyager Class figure (Sky Lynx) as the torso, and the usual Legends Class figure (Wreck-Gar) to complete the set, all as part of the Combiner Wars subline. As per the other combiners in the line, any deluxe toy can become an arm or a leg, and come with weapons that can become hands or feet.
Or you could pick... WHAT'S IN THE BOX.
This item is currently scheduled for release, but is not yet available.

There is a Combiner Wars thread already

Classics/Generations/Combiner Wars