It's all up to the NPPL.
New bunkers are going to be used so that may have something to do with it.
But players these days are spoiled!
Getting the layout to practice. Back in the day we would have 1 day to walk and learn 4-8 layouts before playing an event. That's 4-8 different layouts per event!
Last year the PSP would only give a week or two before the release to help even the playing field a bit for teams that weren't able to get to the pre-released layout enough to learn it.