Looks like Alfred Hitchcock's Mystery Magazine has updated their site to reflect the release of their May 2010 issue, featuring Action by yours truly. If I had to guess, it should be appearing at newsstands (and Borders and the like) over the course of the next week or so.
If you spot a copy, by God pick it up. Who knows what could happen if it were to fall into the wrong hands? (Oh, and for the e-book inclined, pop on over to their website; digital copies should soon be available on the sidebar to the left.)