When asked by a fan if the "special announcement" was true, Pete Hines, Bethesda's VP of marketing and PR, flat out denied it. "No. Another fan hoax," he responded on Twitter.
In a series of follow-up Tweets, Hines said that Bethesda doesn't announce or tease their games through emails from the store. When asked how such an email could be sent from the store, Hines explained "you can set up an email to come from anyone." Perhaps the more important question, asked by Hines himself, is why people feel the need to pull these hoaxes to begin with?
Long story short, there is no Fallout 4 or Skyrim announcement coming on Jan. 12th.