Hey, I am in the majestic position of having received 7 WL and no A so far. The date I received the WL decision varies from October to February. About a week after each waitlist I have sent a letter containing some updates from my application, a thank you for continued consideration, and reaffirming my interest in the school.

Coming April, closer to WL movement season, should I send another letter just reaffirming my interest? I don't expect any major updates until then.