ECU Admissions

I’ve applied to Ecu for a while now and was being reviewed when I checked this morning. when I checked again, now it says that my current application review status is letter in route. What does that mean?

I’ve heard it means you got accepted but it says the same thing on my application status and I’m really curious if that’s true

My status changed to:
Application Status: Welcome Aboard

And later on page it says:
ECU Guide to Enrollment: Congratulations on being accepted to ECU!