The Armor of Sir Gunn's Quest

The armor of Sir Gunn’s Quest is a downloadable content mission set to appear in Assassin's Creed: Rogue.

Official synopsis
 Explore North America to find the remains of Scottish explorer and Templar Sir James Gunn and solve the mystery of the man who may have been the first discoverer of the New World.

Reference

 * Rogue Collector's Edition on Ubisoft