This has been brought up before and the basic answer is don't get your hopes up. Will Fennell has said that Camillus has other projects that are in line first. Also, he has said that a dagger blade shape would be significantly more costly to produce. I'm just guessing a spearpoint might be possible, but the knife would be the same size so they wouldn't have to tool up for a smaller handle.
USAFSP- When you said pitbull, did you mean the bullnose version? If so, this is a blade shape that is only available as a custom ordered through True North Knives. Neil Ostroff has an exclusive deal on that one.
The bottom line is, it all depends on how many Cuda Maxxes they can sell, and how many people keep yelling for a different version. If the current Maxx doesn't sell enough, we'll never see another version.
So buy two, and keep yelling, I want every version too! Maybe we'll get a spearpoint this time next year.