It did take them 13 years to make the next mainline game. Spinoffs don't count. I love Kingdom Hearts, but SE really dragged this whole saga out way too long, and I'm still mad at them for it. And I don't hate the spinoffs either. 358/2 Days holds a special place for me. But damn, KH2->KH3 13 years? Come on SE. Not cool.
Outside of maybe Coded, KH dosent have spinn off games...