Are there new relevant uses of Lua we should be aware of?
("new" ≈ released in the last year.)
Widelands reached 1.0 last year [1].
"Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II..."
Part of 1.0 release was "... long-term stable Lua API for game content designers".