A few days ago Paizo started a new playtest for a upcoming book.
The test is called Tech-Revolution and contains a new class and a new combat system.
paizo.com
The class is called Nanocyte and is basically a futuristic version of a shifter whos body contains nanites he can control.
The combat system is for mechs and is bascially a mix between starship and personal combat. Mechs are following the normal tactical rules and are present on a grid, thus can be intermixed into normal combat but use some unique rules like having a limited pool of energy they need to use for attacking and the more people pilot a mech the more actions it gets (up to a maximum determined by the mech type)
The test is called Tech-Revolution and contains a new class and a new combat system.

Starfinder Playtest | Paizo
Starfinder playtests give you the opportunity to participate in finalizing rules and new materials, including new classes, spells, technology, and more!
The class is called Nanocyte and is basically a futuristic version of a shifter whos body contains nanites he can control.
The combat system is for mechs and is bascially a mix between starship and personal combat. Mechs are following the normal tactical rules and are present on a grid, thus can be intermixed into normal combat but use some unique rules like having a limited pool of energy they need to use for attacking and the more people pilot a mech the more actions it gets (up to a maximum determined by the mech type)