A quick update on the previous report that the first Nikon Z camera preorders will come with a free XQD memory card. WEX already lists a free Sony G 64GB XQD memory cards with all Nikon Z6 and Z7 pre-orders:
Park Camera also offers a free memory card while Jessops has some other free bonuses (Amazon UK still hasn’t listed the new Nikon Z cameras).
I have not seen any confirmations for a free XQD memory card in other countries.
Update: I received reports that a free XQD memory card will also be included in Sweden and The Netherlands. Nikon USA still cannot confirm or deny whether a free XQD card will be included.