I noticed that there have been no updates related to the Pacific Northwest Trail since 2007. I admit that during my 2009 thru hike I didn't take the best trail notes, but I still mention some in my blog. If planning on doing the PNT, I don't know of a more current source (I apologize that most of this blog isn't 100% relevant):
http://voyageofthemiller.blogspot.com/2009/06/15-june-2009-polebridge-montana.html
Poorly maintain stretches where I found little trail and almost all bushwhacking than trail: Liola Creek Trail, Little Snowy Top Idaho
