The special Secret Identity version of Love and Capes #4 is in this month's Previews. Inside, it's exactly the same as the Free Comic Book Day issue that will be in stores next week. It's order code MAY073608.
So why did I, someone who suffered through the chromium-foil-embossed-scratch-and-sniff covers of the Nineties, do an alternate cover version? Because for as much as Free Comic Book Day is promoted, there are people who may not get a copy. Maybe the store foolishly under-ordered it, maybe my throngs of fans will grab all the copies, or maybe they'll be in a post-Spider-Man 3 coma and unable to get to a shop. If you miss the FCBD edition, get the secret identity version.
Do I expect you to buy a copy if you've gotten the free one? Well, I'm certainly not going to discourage you from doing that, but, honestly, you don't have to. You certainly could, though. I mean, you do want a complete set of Love and Capes, right?