Platform A will handle passengers traveling between the World Trade Center and Hoboken, N.J., beginning later Tuesday.
"When complete, the new WTC PATH station wil have several more similar platforms," the PATH notice said. "Moreover, the station will be at the center of the new WTC Transportation Hub, designed by renowned architect Santiago Calatrava."
For now, those using the World Trade Center-Newark service will continue to access PATH trains on temporary tracks 2 through 5, though ongoing work adjacent to and above the station is likely to cause other adjustments even to this location.
PATH said its WTC Transportation Hub "will continue to open in phases through 2015."
PATH earlier this month discontinued weekend service to the World Trade Center for the remainder of 2014, except for holiday weekends, to repair flood damage to the trans-Hudson tubes caused by SuperStorm Sandy in 2012, and also to install CBTC (communications-based train control) on the route between lower Manhattan and Exchange Place in Jersey City, N.J.