Who knows - I used marvel at the diversity of bands at festivals and the qualtiy of material. There is a flip back to Guitar music and song though Bluegrass still claims center stage. Oddly a by product of this trend is a revival of Clawhammer Banjo in some acts - a good thing IMHO. I joined a jam in OK city with the OSW this weekend and noticed the popularity of good solid old fashioned Guitar backings.
What is a tradition? Woody Guthrie adopted what he found in Country/Folk to his own thing, the material is still there.