A new adventure path will be coming soon for Starfinder to bring characters from Level 1 to Level 13. It's called Fly Free or Die and we get a look at an overview of it in this preview.
From the article:
Fly Free or Die is the newest Adventure Path for the Starfinder RPG. It’s a story about working class heroes. They’re not trying to save the galaxy, they’re just trying to pay the bills. But their former employer has hired assassins to take them out, and a crime boss has sent an army of bounty hunters after them, and things just go from bad to worse. Your heroes in Fly Free or Die are quickly going to figure out there’s only two things in the galaxy that aren’t for sale: integrity and revenge.