Anyone else find they discover these sorts of things by accident. I never know when a feature was added but vague ideas of "thats modern". Feels different to when I only did C# and you'd read the new language features and get all excited. In a polyglot world and just the rate even individual languages evolve its hard to keep up! I usually learn through osmosis or a blog post like this (but that is random learning).
Maybe there's an idea in here, a website that shows you all release notes since the last time you've used something, removing those that have been superseeded by later ones, ranked by importance.
