Would simply say you have put the handover date back for your car much like they have moved the delivery date for your new one.
Are new cars in the show room that hard to find ?? I decided on Sunday i wanted a new S3 and bought one on Monday, picked up Wednesday. All the bits i wanted ( S-tronic BOSE, RNSE, auto lights and wipers, bluetooth,, Exclusive leather with white stitching, reversing sensors, heated seats, cruise, BE, AMI/ipod dock etc) less interior light pack but i'm not waiting a year for that when i can fit it in an afternoon.
They still have another new Ibis S3 in the showroom.