Bethesda have announced that after a year and a half of support for The Elder Scrolls V: Skyrim there will be no further content coming for the game outside of small updates as they are now beginning work on their next game.
“For the last year and a half we’ve been working on new content for Skyrim; from the game updates, Creation Kit, Steam Workshop, Kinect support, to DLCs. Parts of our team have also been in pre-production on our next major project, and that game is at the point where it requires the studio’s full attention to make it our biggest and best work yet.” – Bethesda Blog
“Even though we’re moving on, we’ll still have minor updates to Skyrim as needed. We’ve invested so much of ourselves into Skyrim and will never truly say goodbye to it.” – Bethesda Blog
Considering the lengthy development time that Bethesda’s games typically take, it’s unlikely we will get any idea of what they’re working on for a while. However there has been a lot of speculation that the Fallout franchise will be returning in the near future.