Saturday September 16th, 2023: Typeset launches AI design tool, xAI addresses AI concerns, Microsoft event & more

Typeset launches AI design tool, xAI emphasizes AI ethics, Microsoft's Surface event, iPhone 15 vs. Samsung Galaxy Z Flip 5 vs. Samsung Galaxy Z Fold 5, DeepMind discovers AI prompt optimization, game developers urge Unity pricing model reversal, Destiny 2 plagued by weapon bug, Meta tests Horizon Worlds on mobile and web, Unicode releases new emoji.