They said they will do it eventually, but can't give an official ETA on it yet. All hands are on-deck for getting the game ready for testing. You'd be surprised how long it takes for them to decide how much they want to release and then compile that into a proofread, easy-to-read article. Once they are done actually integrating the lore into the game itself via the perception system and such, they will have a better idea how much they want to publically release and have the time to do so.