Check out this new article Wizards of the Coast posted recently:
Excerpts: King of the Trollhaunt Warrens
For the first time in centuries, the trolls of the Trollhaunt have a leader with the will and the wits to forge his lesser fellows into a conquering army. Following are select excerpts, including the introduction, a new monster, and a sampling of encounters.
Thoth-Amon, Lord of the Underworld and the Undead
Once you know what the magician knows, it's not magick. It's a 'tool of Creation'. -Archmagus H.H.
The first step to expanding your reality is to discard the tendency to exclude things from possibility. - Meridjet