This is the Roadmap for the game FATAL ERROR (bit.ly/FATALERROR_Steam), in development by Team ERROR.
Each item in the list represent a milestone build, each one with a progressive version number starting with a letter, a due date, and a codename.
For instance, the last alpha build is A14 and is codenamed "Barcelona" (because it's the one that we presented at Gamelab in Barcelona). BXX builds are beta (normally during Early Access) and RXX builds are final (the game has been released).
To know more, go to the Discussions on Steam: bit.ly/FE_SteamDiscussions