Did the date format change for Query, REST, Post, JSON responses at ags 10?

Discussion created by KG22 on Jan 4, 2011
Latest reply on Feb 7, 2012 by KG22
On my 9.3.1 server i get this response:

"ORIG_HRZ_COLL_DATE" : "1/5/2011 12:00:00 AM"

But on my 10 server i get this:

"ORIG_HRZ_COLL_DATE" : 1294185600000

Am I in error here or was there some fundamental change made in this area going from ags 9.3.1 to ags 10 or is it in the js api?
If yes, then is there a list of all changes like this somewhere? It's very frustrating to have to find them like easter eggs.