It appears that NYC will finally start construction on a new Penn station maybe even later this year to be completed by 2020. The drawings look nice but I haven't read how Amtrak will be included in the plans. Good info here:
https://ny.curbed.com/2017/6/16/15821866/penn-station-governor-cuomo-redevelopment.
https://ny.curbed.com/2017/6/16/15821866/penn-station-governor-cuomo-redevelopment.