In response to Tyler McVicker's latest video on the same, the company says "he has no inside information about what goes on at Valve."
It's been claimed that in a bid to bolster the Steam Deck, Valve is currently working on a co-op FPS/RTS hybrid based on Half-Life called Citadel.
Okay, maybe just a little.
Remember: You need both packs to play the game.
Do everything short of killing Reapers. Which is kinda funny in retrospect.