The Fallout series has been one of the most ground breaking series of video games for the PC that's ever been released. It has been critically acclaimed and a commercial success due in part to the open world game play, storylines, and excellent game mechanics just to name a few.
While it's been over two years since we've seen a full Fallout release (that's right Fallout New Vegas was released back in October 2010), recent rumors have been swirling that Bethesda Softworks will be making an imminent announcement about Fallout 4. Then back on Jan 8th a voice actor from Fallout 3 Tweeted "To all my #Fallout3 and #ThreeDog fans: There may be more of the Dog coming! Fingers crossed!", followed up by a Tweet that says he received permission to release the statement. While that's not an official statement from Bethesda it's a positive for the possibility of Fallout 4 in 2013.