Nope, afraid not. I know Brian and Graham are messing around with Turn at this time (see FPR vid posted below) but when it will be out I dont know.
Regarding Linux, I have never used it but from info I have had from people who have, it does some things that Mach doesnt and doesnt do some things that Mach does, suppose it will just be a case of try and see if it does what you need.
Hood