we have had a hard release date from sony for the past few months, we need to hit this deadline because we are under contract to do so.
honestly though there is a cut off point to almost any game ive worked on where i think enough is enough time to start adding new content and see how things go… if i feel like adding more for free i will (and have with all of my larger games), but if the content takes much longer to ill charge for it.
another thing to keep in mind console wise sony needs to know if/when we plan on doing any dlc because it needs to be approved and tested in time for release.. so most places need to plan dlc kind of early when planning this out.