Deus Ex: Human Revolution Director's Cut Patch Released

Eidos Montreal has released their first patch for Deus Ex: Human Revolution Director's Cut, which addresses a handful of issues with the game's AI, graphics, sound, performance, and more. They're apparently working on "the second screen functionality on PC and Xbox" and a few other problems yet, so expect a second patch sometime in the near future. The full notes:
AI Bug Fixes

The Personality Dialog no longer disappears when talking to Chase;
Chet Wagner no longer missing;
Sarif dialog fixed when using pheromones.

Graphic Fixes

Black material - Fixed texture problem on the base of Detroit convenience shops;
Black wall in Sarif HQ near the entrance fixed;
Bright green textures instead of metallic textures in Hengsha kitchens fixed;
Fixed textures tiling issues in Adam's apartment floor and wall, Detroit grass and corridors;
Fixed floor tiling issue in Detroit apartment carpets;
Fixed black material on Tai Yong Medical walls.

Sound/Music Fixes

Fixed stuck sound issues;
Megan intro music stops playing in the walk and talk;
Fixed audio glitches in level load;
Fixed incoming commentary sound glitch when the system is disabled;
Music no longer stalling when performing an alt-tab.

Features fixes and additions

Setup dialog: now possible to change settings outside of the game;
Text selection language option fixed;
Fixed language switching issues from Steam and in-game;
Some performance optimizations.