National Waiting List Question

I just re-read a letter that was on my portal which said: "qualified applicants are placed on a National Waiting List until appointments are made. Most appointments will be tendered between 26 February and 1 May 2016."

Does that mean students on the National Waiting List will bear back starting May 1st???
Also, since I received this letter, am I on the National Waiting List? Is there any way to find out if I am?