Thanks! I heard on Monday morning, about 9:30am. Have you seen the discussion unfolding at academicjobswiki? Based on it, I think the ACLS Mellon is announced in waves. That is, not all accepts or rejections have been announced yet (this also seemed to be the case based on the previous 5 years listed there). And aside from rolling announcements, there's also the possibility that a recipient might turn it down for another award. I was given until April 9th to accept. So if you haven't heard yet... I'd assume you're still in the running. Fingers crossed for you!