I haven't seen much of a change at all for exact match domains that I own. The main thing to note here is to have proper onpage optimization. But overall EMDs are ranking just fine for me and I've seen others doing well with them.
I'd like to share a snippet from SEOMoz (or Moz..).
"The ranking ability of exact and partial match domains (EMD/PMD) has been heavily debated by SEOs recently, and it appears Google is still adjusting their ranking ability (e.g. this recent post by Dr. Pete). In our data collected in early June (before the June 25 update), we found EMD correlations to be relatively high at 0.17 (0.20 if the EMD is also a dot-com), just about on par with the value from our 2011 study:
"The increase in correlations between March and June says that the EMDs that are still present are ranking higher overall in the SERPs, even though they are less prevalent. Could this be Google removing lower quality EMDs?"
Source: 2013 Search Engine Ranking Factors - Moz
I'd like to add on that I definitely see what they are talking about.
If you're setting up junky EMDs with a bunch of BS content just to rank.. good riddens you don't deserve to rank anyways.
But if your using an EMD and actually putting work into it and continuing to work on it... they seem to hold a lot of value and in many cases I've seen better rankings as of late, especially with localized results.