Personally, I'd leave the wiki as-is in this particular case, because we're not going to have absolutely unequivocal confirmation one way or the other until and unless someone comes out with a working FTL drive.
More generally, I think we should probably just make it a rule that any new scientific discoveries that outright contradict major plot points in canon did not happen in Fenspace.
More generally, I think we should probably just make it a rule that any new scientific discoveries that outright contradict major plot points in canon did not happen in Fenspace.