Left 4 Dead 3 appears in Counter-Strike 2 files

The internet is currently buzzing about mentions of Left 4 Dead 3 appearing in files for the upcoming Counter-Strike 2. So apparently Valve can count to 3 — not the 3 the majority of their fans will want I imagine but still, why is it there at all in a huge upgrade for CS:GO?

Mentioned in a Reddit post, it shows up with some curious strings:

This has led some other news sites to run headlines like "Left 4 Dead 3 is a non-priority", because it makes for a great bit of clickbait, even though it also says the severity is "high". Realistically, no one outside of Valve will even know what these strings are actually doing.

Left 4 Dead 2 is easily one of my absolute favourites from Valve, so I'm cautiously excited over this. Clearly Valve are slowly getting back into actual games. We had the fantastic (and one of my all-time favourite experiences) with Half-Life: Alyx, Counter-Strike 2 coming this Summer and then who knows what? Valve hit a home-run with the Steam Deck as well, and clearly what has been announced for Counter-Strike 2 has a lot of people excited so it would be good to see them keep up this momentum.

What do you think? Might we get a Left 4 Dead 3 announcement at some point?