The best place to find news on any game for that matter will always be specific sources such as find a youtuber who makes mainly all there videos to do with said game then find there Twitter and just keep an eye for there tweets that's the best way to find info
They've been releasing stuff on Bethesda.net; for the past seven weeks, it has been a SPECIAL video on Wednesday, and some other article or video on Thursday. They didn't release anything related to Fallout 4 today, but hopefully they're just saving it for tomorrow, since tomorrow (October 23rd) is the date of the Great War in Fallout lore.