A few days ago, a website popped up registered by ZeniMax called TheSurvivor2299.com which seemed to be a teaser site for Fallout 4.
However, some thought it might be a hoax, since the web domain registration was atypical of ZeniMax and Bethesda.
Now, a registration has appeared at OHIM, which handles trademarks for the European Union, for a Fallout 4 trademark, registered by Bethesda Software.
The registration happens to have been filed on the same date that TheSurvivor2299.com popped up. The countdown ends at the 11th December, so stay tuned in a month or so.