J.Crew has updated its Spring Sale page to Summer Sale (click here). I am not sure when this change happened, but I think it was recent.
Mini Update: "Thanks!' to Marietta who let us know that J.Crew sent an email (shown below) with the subject line "Introducing Summer Sale. Hot. Hot. Hot" to announce the change in sale from Spring to Summer. :)
Hopefully we will see some new sale items added to the Summer Sale soon! :)