I applied on Monday (02/23), was told that the process could take 4 weeks, called back on Wednesday (02/25) and was told that I was approved, asked if my cards be expedited or overnighted and they said that my cards would be received by 03/02 (today - my letter carrier has not yet arrived).
So, it appears that the process varied greatly, but at least you have my turnaround schedule.
HOHJA