XC60 dates – order, confirmation, date of construction, LT at model change

Since the end of April/ beginning of May there is the slightly changed XC60 with price list and announcement. Specifically I have a date question regarding model year. I ordered my new car in February. I received a desired delivery date from the leasing in KW 24, i.e. 11.- 15 June, because my old contract expires at the end of June. Now the “price question” is then a model year 2012 (i.e. D3) or already a model year 2013 (i.e. D4). Or the other way around: When will the new models be built? Are there fixed dates, or is that sliding ( according to the motto D3 is “all”, next car is a D4)? Who can explain this to me on my data? Thanks Walter