John Prine is still going strong. His eponymous debut album is essential listening for anyone who likes folk. You might also listen to what Billy Bragg and Wilco did to Woody Guthrie.
As for where folk may be headed, listen to The Decemberists.
Wow, Sam Stone citing Billy Bragg? 
I think my head is exploding. I was prayin’ the pieces wouldn’t fall on me.
If I let my politics choose my artists, the playlist would be pretty short.
Good music is good music, and Mermaid Avenue is great music!
Sam Stone, when you gonna wake up and strengthen the things that remain? Now there’s a conservative song with great guitar playing.