They are.
Pathfinder are not using any standard game release schedule. There are no NDAs in operation - what you see is what you get, there are no secret surprises they are hiding to wow your socks off or deny other games from stealing off them.
They are operating as a true kickstarter project. What they plan to have at release will be the bare-bones foundation of a working system (what they call a "Minimum viable product")... and that's it. Some basic character models. A selection of weapons and armour. A small handful of enemy mob types. Resource harvesting and crafting. A marketplace. This won't be your usual polished game that is complete when you buy it. They are starting at ground level and asking players to journey with them as the game expands and evolves.
It will be very interesting to see if it works for them, as it requires quite a leap of faith from the playerbase. Most will probably take one look at the graphics and basic gameplay and not even give it the time of day. Others will see it as an investment - characters effectively level in real time, so those who are there from day one and stick it out have the potential to be greatly rewarded for their perseverance.