That's what I was told, but to be honest, I doubt anything was installed.
All my apps/ settings were intact and my version number is the same as the regular shipped build.
I was told to restore my iPhone fresh (which would delete the installed patch, no?) and not to restore from back-up, which is possibly the fix itself. I'm going to do it now and will report back on the results... did you upgrade from a previous iPhone and restored from a previous back-up?