https://www.catl.com/en/news/6015.html

https://thedriven.io/2023/04/21/worlds-largest-battery-maker-announces-major-breakthrough-in-battery-density/

Resolves YES if a credible source points to a product or commercial source using the new batteries AND they have been proven to be 500+ Wh/kg.

Open to changing the resolution criteria if someone have suggestions for a specfic testing/news site to watch for.