Major immigration announcements are usually announced on Fridays. Daca was announced on a Friday (June 15, 2012) as well as the recent military one (Nov. 15 a few days ago) and the Morton Memo (June 17, 2011) and the list goes on. In Washington, Fridays are reserved for news dumps since it's end of the news week.

So if it's a Friday, cross your fingers! (lol, sorry couldn't resist)