Hey i was just surfing around on youtube and saw what appeared to me a legit trailer to so called "Fallout 4 San Franciso" i was just posting this to see if it was really true or not. Please tell me if it is.
If it was a legit trailer people would be talking about that one years ago, plus it'd be on Bethesda's parent publishers own Youtube channel.
Fallout 4 is years away from being announced. Unlike other studios, and similarly to Rockstar, BGS announces their games about half or even 3/4s the way done before playing, polishing, changing, bug fixes, etc. stage of development as seen by their latest debut, TES V: Skyrim.
We already know their next game whether FO, TES, or another existin/new IP is for next-gen consoles and the PC hardware out at that time.
Expect probably an announcement at years end 2013-16 range. Probably around 15. At last count Bethesda's keen on the 3-4 year development cycle. Including preproduction that's around 5-6. Plus Skyrim was announced about 2+ years after FO 3's release.
But their next game would be next-gen so keep that in mind. Gen leaps take more time to develop usually ala Morrowind. They have gotten better though and are a premier studio with a Private parent company with a ton of resources though so anyone's guess.