From their website:
Fantasy Flight Games is honored to announce upcoming release of Code of Chivalry for BattleLore! Swell the ranks of your armies with this Human Army Pack, featuring knights, arbalestiers, and lancers.
Code of Chivalry comes complete with two new unit types as well as two unit types previously released in the Hundred Years War and the Scottish Wars expansions. These units will easily bolster the forces of any Human army, giving players more options during their BattleLore games.