I can't say I've noticed a return to 60s and 70s style of singing. Can someone give me some examples?

For me the epitome of 60s folk was either Martin Carthy or, more influentially, The Watersons - but they were my first real introduction to folk music, we met frequently in the local clubs and they came from just down the road so they talked like me. I don't relly think I've ever shaken off the influence of Mike Waterson especially.