The patch contains various bugfixes and game improvements such as widescreen support, and provides some GUI tweaks. It also enables the use of the FMSel fan mission loader frontend with Thief 3 and bundles the most important T3 mods. It works with the GOG and Steam versions of the game.
New in 1.1.11 Editor Edition: In-game and in fly mode, the PrintScrn key will now produce a set of six quadratic screenshots for use in cubemaps or environment maps. This example was provided by peter_spy.