The question seems to ask who is rehashing the old young lions. Hope I'm wrong about this since it's a lot more interesting to hear artists who are stretching themselves and finding something that works. There's a difference between a player w/rote technical prowess and someone who is working at the edge of what they know, (age doesn't necessarily mean your stuck in the mud as a musician)...Here are a few to chew on:
Ken Vandermark
Jason Kao Hwang
John Hollenback
Lucas Niggli
Miriodor
Kevin Norton
Rich Halley
Tony Malaby
Ben Goldberg
Ellery Eskelin
David Fiuczynski
Tim Berne
Marc Ducret
Pierre Labbe
Hamid Drake
Akineton Retard
Fortunately there are a hell of a lot more.
Ken Vandermark
Jason Kao Hwang
John Hollenback
Lucas Niggli
Miriodor
Kevin Norton
Rich Halley
Tony Malaby
Ben Goldberg
Ellery Eskelin
David Fiuczynski
Tim Berne
Marc Ducret
Pierre Labbe
Hamid Drake
Akineton Retard
Fortunately there are a hell of a lot more.