Those games are still exclusive. Yes they have announced that other than RE4 they won't be bound the the GCN....but they are still in development only for GCN. If one of them does really well then they might port it to Xbox or PS2 but I doubt they would waste their time on it....and I think they like the GCN a little too much. I doubt P.S.4 will start any porting until the GCN games are complete.
And then again, if a game does really good, Nintendo might "influence" Capcom to keep it on GCN. So that brings the probability of going multiplatform even further down. Personally I only care about Viewtiful Joe and RE4 as long as they redo the controls and stuff...