Yes, the extended version should run approximately 140 minutes.
Doing a little bit of research, I found out that Australia is getting a 2-disc DVD release of the extended version on the same day. Meanwhile, the upcoming Sony UK Blu-ray release appears to merely be the theatrical cut.
Anyway, a search shows many sites listing Sony's Australian release as the extended version. They seem to list the runtime of the theatrical cut, but that is a common mistake. A couple of sites list “Over 15 minutes of additional footage edited back into the movie” as a special feature. It appears to truly be the extended version.