Besides HN, I’ve received most of my web dev news from following Addy Osmani on Twitter.
Addy is a really good source of web dev news as he posts (and retweets) a lot of relevant web dev content such as new JS features, new CSS properties, PWA, react, webpack, and more.
Since I plan to quit Twitter, due to reasons irrelevant to post here, I’m curious to see if there’s a reliable blog (to RSS) which posts about latest web dev content.