I'll say one thing. If a franchise with 2 characters can have both of its characters unlockable (Fire emblem), then a franchise with 3 characters can have all of its characters starters. It's true that you can never be too sure with Sakurai, but I'm basing this on a couple things. Dedede and Metaknight will probably be starters because:
That was because both weren't even suppose to be in the game outside of Japan, and Sakurai clearly did not want everyone else to know outside of Japan right off the bat.
1. Metaknight is on the boxart, and in past SSB games only starters were shown on the boxart.
2. Dedede is in the first event match and a playable in the third.
3. Metaknight was revealed since the very beginning. We've known about him almost since the game was announced.
4. Dedede is in a public commericial, yet Nintendo for some reason has a closed lid on unlockables for the game. Why would they reveal secrets on a commercial if Nintendo is hell bent on not even showing us the starting roster? Obviously Nintendo wants to surprise us.
5. Metaknight was playable at E4all. Sonic is a special case because he is a "guest."
1. Yes, but I was more refering to King Dedede.
2. Luigi was in the first adventure mode match.
3. Intrestingly enough, Jigglypuff was leaked very early. But again, I was more leaning towards King Dedede being possibly a secret character.
4. So was Luigi and Jigglypuff in Melee.
5. Again, King Dedede. He could be unlockable in the first event match. Heck, Kirby could be a secret character for all we know. The point is, we know nothing.
Did they really show Jiggs and Luigi in the Melee Commercials? Do you have proof? I didn't know that. But then again, were Jigglypuff or Luigi in the first few event matches?....
Like I said, 3 kirby starters is not confirmed, but all these things I've mentioned are the closest thing to a confirmation there can be.