It's about buying properties in 45 "inner-city" (high-density) geographical markets worldwide, not just in the US, and transforming those properties into mixed-use spaces.
"We plan to build mixed-use facilities that we call meeting places and that have a wide range of facilities and services," an Ingka representative explains in the OP, adding that "activities could range from healthcare and education to festivals and events, besides retail and food."
I view this as a minor but still welcome development for real estate in high-density areas.