I'm also thinking a lot of this line's release schedule depends on how vast the character selection is.
I mean, how many characters is Hasbro willing to give us?
it would make sense to do the Raiders line around Dec. then a mixed movie line in Feb-April and the Indy 4 line in April-Aug then go back into the Mixed line around Sept. for a BIG 08 christmas build.
after that, you really have to wonder what kind of legs hasbro is expecting. I hate to say it but there are not a lot of versions of Indy that hasbro can give us and there needs to be at least one Indy in each wave. I expect there to be a standard Indy figure that will probably be in every wave of figures made. I do not see Hasbro making the same mistake that Kenner did which killed the line.