Certainly not encouraging for someone like me, who bought miles just before the 31Jan deadline which was then extended by a month to end of February!
If they are treating all of it (Dec/Jan/Feb) as one promotion, then I guess no-one's going to get any bonus miles till up to 8 weeks after the end of February...? For the same reason as everyone else who's waiting for their bonus miles, I sincerely hope this is not going to be the case.