i know the first round went out that time because i corresponded with a prof over email and he told me so. this was consistent with the fact that a few DEAS acceptances went up on gradcafe at the same time, all through email (and i also personally know someone who got a DEAS acceptance that time, with no program specified). and someone from another board said he got an applied physics email that time.
as for the friday decision-making time, i got that from this:
http://www.urch.com/forums/admissions-r ... ssion.html
i guess i should have included some uncertainty there, since it's provided by some anonymous person on a message board... but i don't see any reason to not trust what that person says. and as i said in that board, i called GSAS at harvard and they told me the DEAS will try to notify everyone by Mar 15.
and i have no idea how to find about waiting list... i wish i knew for myself too