We ordered the wife's R on Friday the 2nd October and it's due to be registered this Wednesday, the 6th. However, still waiting to hear from the lease company about paying our deposit so I would say the chance of getting it this week is slim. That makes it 14 weeks next Friday.
I suppose 14 weeks is fairly typical. I was told 12 ish but always thought that would be optimistic. Pretty bog standard car too - Lapiz blue 5 door with heated seats and mirror link.