That's basically all there is to it.
When Capcom basically stunned the gaming media and announced Viewtiful Joe, Dead Phoenix, PN03, Killer7 and Resident Evil 4 exclusively for the GameCube a while back, questions began to rise about just how exclusive these titles would be. Well, after the (supposed) cancellation of Dead Phoenix, Vanessa Z. Schneider's not-so-hot game, and the successful but low-flying Viewtiful Joe, a lot more questions about Capcom's decision arose.
The next game in the Production Studio 4 line, Killer7, won't be open to the same questions, as Capcom has posted a notice on their Japanese site simply stating that, while the GameCube version of the game is still going on as planned, the game will also be released for the PlayStation 2.
However, no release timeframe for the PS2 version was mentioned, meaning the GC version of Killer7 still might be exclusive to Nintendo for a little while. Either way, it's one less game Nintendo has in its lineup that gamers would require a GameCube to play.
Despite the exclusivity loss of Killer7, Capcom continues to insist that Resident Evil 4 is and will stay exclusive to the GameCube, which should be released before the end of the year is up.
Thanks to Berto2K for the heads-up!