I found this to be pretty comprehensive (not sure if this is the final release note, though): https://github.com/neovim/neovim/commit/a5ac2f45ff84a688a094...

    Lua remote plugin host
    Lua user-config: init.lua
    Treesitter syntax engine
    LSP client for code navigation, refactoring
    Extended marks (text properties, decorations, virtual text)

From https://neovim.io/roadmap/

There is a draft on the GitHub wiki here: https://github.com/neovim/neovim/wiki/newsletter-%2311-:-the...