NACSW sends an email to the membership announcing that a specific trial has been approved and that the premium WILL BE available at the specific host's website. This is a "save-the-date" email. No premium has been approved at this point. No entry date has been assigned.
NACSW sends out a second email to the membership announcing that this specific trial premium IS NOW AVAILABLE along with the assigned entry date. If you don't see the words "IS NOW AVAILABLE" in a given membership announcement email, then the premium and entry date are not yet available.