For all the waitlisted people out there, I talked to admissions this morning and they made me feel a billion times better!!
They can't tell me how big the waitlist is, but there are about under 400 people that were interviewed (~380). All three decisions
were sent out yesterday for interviewees, accepted, alternate, and rejected. There is no telling how this cycle will go, since every cycle is different, but there have been some years where Tufts has gone through the entire waitlist and other years where they've only moved two spots (as with any professional school, they have over-accepted for their 98 seats so they're anticipating that they'll fill most of them). However, Tufts doesn't do ranking as mentioned in their letters - which means they look at all applications again after the April 15th date.
We can't expect any movement on the list in the meantime until then. If you'd like to send them transcripts/letters/new experiences,
go for it! They said they'll take anything you want to send them to help your application along (although she did mention letters probably will not help at this point, but grades do seem like they will).
I felt so defeated all throughout last night and this morning, but she definitely made me feel a bit prouder of myself and more hopeful. I hope this helps you guys.