Colh you might get an earlier delivery date. I ordered mine on April 12th. It was built week of May 14th, and is due at the dealer week of June 21, with delivery to me by end June hopefully as that ties in with the end of my current A4 lease.
So, ordering on May 19th, you might be looking at end July/early August delivery. Then, you may with to request a delay to get the 68 plate instead of an 18 with only a month to go before the plate change.