Some retailers will not be able to take full advantage of their The Lost Caverns of Ixalan prerelease sales as WotC revealed that Collector Boosters for this set will not arrive in time for the start of prereleases. The delay on this product was due to production issues, and could last a few days to three weeks depending on the region. Additionally, for the U.S. and Canada, The Lost Caverns of Ixalan Commander Decks will have a limited availability during the prerelease time frame.
Currently, WotC's production and logistics teams are working on ways to minimize the impact of the delays, and retailers should monitor their distributors for the most updated information.
Wizards of the Coast also recently announced that the physical product release of Dungeons & Dragons: The Deck of Many Things boxed set will be delayed (see "Boxed Set Pushed Back").