That's interesting, I ordered mine at the beginning of March (although the dealer had actually put the order through for it early February) and I got a build week of 16 (i.e. week beginning 18th April). I've had no notification of any delays and its just moved to the preparation phase today and still showing build week 16 so doesn't appear to have been affected by any delay if there is one.
Seems a little strange if it is just "certain configurations" as other than the engine variant I can't think of any thing else that would impact the S-Tronic. We're all talking about the 218 here although in my case its a quattro, I wonder if that's the difference?.
Given that my order is relatively recent you'd think I'd be at the back of the queue if they are playing catch-up on this but I don't seem to be, strange....