Just sayin, they also own fallout5.com. It just has no hosting to it
According to the reddit leak like 11 months ago, they're going to be coming out with another fallout after this one. Its also supposed to be released in the fall of 2015 (fallout4). I'd go with the leaker, because she hit every nail straight on the head.
Yeah, they have bought all the domains for the games like 3/4 years in advance. Apart from fallout6.com. Someone else owns that.