A new patch for Torchlight 2 is now available, as detailed by Valve's update on the Steam blog.
The patch addresses several functionality problems, as well as a number of gameplay and skill options. Players can now toggle map visibility, correctly set player difficulty, and send their pets to town from the last two boss rooms, among other things.
Check out the full list here. Torchlight 2 released on September 20th for PC.