This is the google translated text:
The new product “17-28 mm F / 2.8 Di III RXD (Model A046)”, scheduled to be released on July 25, 2019, has a reservation significantly exceeding our forecast. , It is predicted that the production number will not catch up with the customer’s request.
We sincerely apologize for the inconvenience caused to the parties concerned, including customers who are waiting for the release of the product.
Delivery to some customers who have already made a reservation may be after the release date. In addition, customers who will be making reservations in the future will also be delivered one by one, so it may be time to deliver the product.
We will do our best to deliver as quickly as possible, so we ask for your understanding.
via Tamron Japan