The new RP's going to be dieselpunk, in the interwar period. As for the backstory, that's still a work in progress over on the Discord, but we're working on it at a steady pace.
The RP that's coming to an end, however, is FT:FTL. There's a lot of backstory for that one... Too much to really summarise, but the main jist is 'everything is on fire' with a hint of 'apocalypse'. You know, standard RP stuff.