On Thursday Apple removed the April 24 availability date from its website, saying the watches likely won't be shipped until June.
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Demand for the watches has apparently exceeded expectations.
Reports say about 1 million people pre-ordered one last Friday, the first day orders were taken.
Customers can still order a watch, or make an appointment to try one on in an Apple store.
The Apple Watch is the Cupertino company's first new consumer product in five years.