It was said at the 2004 GI Joe Collector Convention Conventions that the comic 3 packs won't necessarily come out in issue numerical order after issue 9, but there is a rumor that there will might be a 3-pack based on issue #21 could be up soon including another Snake-Eyes figure, Destro and the quite possibly a Storm Shadow figure, which is marks his first apprearance.
I hope these rumours are true.