Does gog's version of Defiance already have the 1.1 patch installed or do I need to track it down and install it myself?

Sometimes better try to install manually... Non rare that patches missed or incomplete. But. As i remember every LOK titles have readme files from its patches on root folders. Except BO1 that never have patches supposedly. According to this readmeas all games here are patched (ooops forgot, it did).
There was specific french bug and fix for SR2 as i remember missed on GOG (germnan version have needed hotfixes). BO1 same as old crack+fix'ses exes include slowdown hack incl reducing FPS. Need fanmade mod to restore original FPS or increase it even higher and add widescreen. And many else improves. No else mandatory patches official or fanmade (you must lock the FPS for all of them except BO1).

Oh yeah. There was official patch for BO1 for Japan localisation and or Japan MUI or Jap localisation on En-MUI. Gog as i understand implement their own. It was language identifier error fix official made for Japan PC version and GOG patch it for ENG version (is a chance it was patçched before too but GOG rid from scratch).