During a SchoolHouse.world meeting today, Sal Khan mentioned in response to my question that, "the concept map is coming back probably in about a year, using generative AI". 

Thank you so much to everyone on the Khan Academy teams for all of your work, especially on this incredible feature. The concept map is incredibly motivating because it shows incremental progress and the connections and dependencies between topics. 

Several projects have attempted to create and save the remnants of this much-loved feature. 

As a computer science major, I would be happy to help as needed, give feedback on its development, or collaborate on designing A/B user testing.