Mine shows the same. I know there’s been issues with supply and hence deliveries in the US so not sure what to expect here. I don’t expect Apple to make the same mistake twice but who knows.
Delivery window is still 6-10 June.
Ordered the wife a pair this afternoon. Got dates between 11th and 18th June. Doesn't bother us tbh, however further delays could cause issues (Going to Mexico for 2 weeks not long after that).