If I remember my lectures on gamedev QA accurately, there's a good case to be made for sending out multiple different builds to different subgroups of testers to make sure they focus on different mechanical aspects.
As 2.6 is supposedly shipping out different changes, both the overhauled flight models as well as the introduction of FPS mechanics, it would even make sense for CIG to roll out "partial" builds to their testers.
Not saying this is the case, just saying it's a conceivable and in fact frequently used practice within the closed-testing phase of game development.
It would however, be a logical explanation for the different contradictory "leaks"![]()
There's nothing contradictory about it. There are lot of people in SC community loving to claim things they have played - happens all the time (that time when some guys claimed they have "got" Derek with feeding false information about 3.0 demo on subreddit). It's sort of wishful fulfillment. As far as I have read, CIG has never employed such strategy and I really doubt they have done this now. Most likely SM is not ready yet, and will be rolled into build at later date. It means testing will go on for some time, most likely till Christmas (All my speculation of course).
Anyway, I agree with those that as long as it is not appearing as public release it is really nothing to talk about.