I want to be excited about this but I feel like I don't quite get it. What I imagined from the subject heading is like a barebones canvas with the most rudimen

I want to be excited about this but I feel like I don't quite get it. What I imagined from the subject heading is like a barebones canvas with the most rudimentary implemented features, but then a neat way of building more features. If that's what it is, then it needs some docs.