A recent Steam backend update for Fallout 4 contains a reference to "New Vegas 2," and while that fact almost certainly has nothing to do with the sequel fans have spent years begging for, everyone's still desperate to know why.
Updates to Steam apps are typically publicly visible thanks to third-party tools like SteamDB. Among other things, you can see beta and other alternative versions of a game, such as those made available to testers or press ahead of that game's launch, even when those branches are not intended to be available to the public.
