The biggest question is will this include options for crossbowmen, slingers, and thrown weapons builds? Are they planning on buffing these builds to make them more interesting and usable across various classes? Or is this more stuff for just ranged spell casters and bow characters?

If the latter I feel like it's kind of missing the point since both of those builds are pretty well covered and represented by the rules currently to the point that pretty much every existing ranged character is either one of those builds or the errant gunslinger.

Seriously we really don't need more books that focus on what is literally only 40% of the range build options in the game while other options (some of which are literally built into a races stats) are left to languish on the side of the road.

I'm not asking for op slinger builds (though honestly I would laugh with joy at a broken halfling slinger build coming to dominate pfs play) or anything like that. I just want to feel like if I want to play a ranged character who is say a viking spear thrower or a chelish crossbowman I can actually compete and keep pace with the rest of my party without having to play an ultra specialized archetype in order to do it.

Also some kind of feat that gives blanket proficiency in repeating crossbows. As it stands it makes 0 sense that I have to take 3 feats to learn how to work all the repeating crossbows (when they are all literally the same as their non repeating counterparts with the same feeding mechanism) and yet exotic proficiency (firearms) gives me proficiency with EVERY FIREARM THAT IS OR EVERY WILL EXIST.