I'm thinking possibly Erik Mona's mystery thing. On the d20/OGL board, we were discussing upcoming Polyhedron games. Erik mentioned there was a minigame which had something "to do with some ads run in Dungeon and Dragon", to which I guessed a Confrontation d20, since there've been several ads for Confrontation miniatures. He said that some of us had guessed closely... now I don't know whether my guess was one of those, but the fact that it's soon upcoming, the name Incursion sounds like a minis wargame, plus the fact June 2003 would coincide to shortly before the release of 3.5... maybe this is the miniature game tying in with the release?