4. Three Dog Returns
This is easily one of the more plausible rumours given that it has a source close to the game, as in January, Erik Todd Dellums, who voices Galaxy News Radio DJ Three Dog in Fallout 3, tweeted suggesting that he would likely be reprising his role soon - "To all my #Fallout3 and #ThreeDog fans: There may be more of the Dog coming! Fingers crossed!" Dellums was given permission to send out the Tweet by Bethesda, damn-near confirming that a) the game is being worked on and b) Three Dog will be a part of it. One of the best non-combative characters in the Fallout series, Three Dog was a calm, welcoming presence throughout Fallout 3, and getting to see him again would be a great way to tie into the previous games. That it seems all but confirmed is just icing on the cake.