I think you misunderstood something.
The only career-less specialization in the book is a new Force Sensitive specialization.
Then there are new careers, with 3 specializations each, just like in EotE.
Ace with Driver, Gunner and Pilot
Commander With Commodore, Squad Leader and Tactician
Diplomat with Ambassador, Agitator and Quartermaster
Engineer with Mechanic, Saboteur and Scientist
Soldier with Commando, Medic and Sharpshooter
Spy with Infiltrator, Scout and Slicer
And then a new Force Sensitive Emergent universal specialization.
It's possible I missed it, but I don't see any other unversal specializations. Now, you can learn specializations from ANY career, so maybe they were saying everyone could buy talents from the soldier tree.