Amtrak's official press release is somewhat complicated in how it describes what will happen, but essentially there will be in PA just one train each day between Pittsburgh and Harrisburg. Since the original press release is not available on the new Amtrak.com web site, I have used the Google cache to show you a part of the original text.
Effective Nov. 1, 2004, the Three Rivers (New York-Pittsburgh-Chicago) and Pennsylvanian (New York-Pittsburgh) will be replaced by one New York-Pittsburgh-Chicago train offering Coach and Business Class service. It will operate on a schedule nearly one-hour faster than the current Three Rivers.
On or about March 1, 2005, service on the Three Rivers route will be eliminated west of Pittsburgh, following the legally required advanced notice to the affected communities of Youngstown, Akron and Fostoria, Ohio, and Nappanee, Ind.
I wonder how many people in southwestern and south central PA know about this and care enough to say something.