I don't understand everything on those blogs, and it's not always focused to chrome or firefox, but I like to have that on my rss feeds...
Sometimes, something is catching my mind.
(sorry for my bad english this morning I'm not awaken)
They all showcase the Browser's latest features and updates.
Edge notes are released with major updates for Windows 10, so they appear less often, but details are explained. Likewise with Apple Safari for macOS and iOS.
I have always found the pale moon forum extremely helpful and the browser developer moonchild is often on hand to give advice with any issues...i doubt google or mozilla are in such a 1 to 1 position with their users..nice community in the palemoon forum.