Arcane Evolution Spellbook?
 

Didn't find this reported elsewhere, so maybe I'm missing something. The sorcerer feat Arcane Evolution grants a spell book that is supposed to contain all your spells that you can also add new spells to. The feat doesn't seem to add this automatically. I "bought" a spell book in the gear tab, but there is no way that I can see to associate this with my spellcasting tradition. Am I missing something?

Nope. Arcane Evolution hasn't been implemented yet. You can add a spellbook and your spells to it (making sure they qualify since it won't do any checking for you) but you'll have to work around your spell of the day with adjustments.

Thanks for the response. Do you know if it's been reported as a bug? Or is there another thread that talks about it? It seems kind of weird, given that it's a feat in the CRB that's been out for a year and a half. Wizard or Magaambyan archetype function very similarly in terms of adding a spellbook and a signature spell.

Not that weird considering that Starfinder subscribers are still waiting for a core mechanic of the system (starships) to be implemented, 3 years later...