Canon has updated Digital Photo Professional software to version 3.8.0 (Win) / 3.8.1 (Mac), EOS Utility v 2.8.1, Picture Style Editor v 1.7.0, WFT Utility v 3.5.1, Original Data Security Tools v 1.8.0.
Main updates for DPP are the support for the next EOS 550D / Rebel T2i and (finally) the addition of an horizon correction function to the Trimming Tool - before just 90° rotations were supported!
The updates can be downloaded from this link (click the "Drivers & Downloads" tab and select your operating system).