According to Canon USA, DPP 3.11.4 is the latest release. It's kind of confusing as some of the talk in this thread seems to be referring to a latter version that's out there somewhere.
Yeah, the new version hasn't been publicly released yet, although there are some "unofficial" links to it.
Look at the version you have -- if it was the new version it would have an HDR feature, a "multiple exposure" feature and a Digital Lens Optimizer feature (DLO), all new features in the 5D3 that will also be part of the new DPP.
If you're curious you can download a manual for the new version by going to the 5D3 section and the Brochures and Manuals section. It's just designated DPP version 3.11, but it's dated 3/16 and has the new features.
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