Mark Gurman, Bloomberg:

Apple Inc. plans to drop its mask requirement for vaccinated customers at many U.S. stores beginning next week, a move that will mark yet another major retailer moving away from the Covid-19 safety protocol as states ease restrictions.

And:

The change will go into effect as early as Tuesday, and employees have been told that they won’t be required to ask customers for verification of vaccination.

Obviously, this is not yet a publicly announced policy and may vary depending on a specific Apple Store’s location. And Gurman points out that Apple Store staff will still be wearing masks.