The diary says that this is a collaborative effort between the University of Brasília and the OSMF Foundation supported by the Communication Working Group.
The CWG even commented this thread after two hours, I don’t think any CWG member commented the NG thread in two years.
So yes, it does seem somehow official—at least more than the other two projects.
That said, it might help to clarify what exactly the mentioned “effort” from OSMF is.
Also, I’d be curious to hear @TomH point of view, would you be willing to share it?
EDIT: I see Tom commented directly in the diary.