I think it's a bit odd that haswell/devil's canyon is newer than fx 8350, yet people say it's dead. The only reason the fx 8350 isn't 'technically' dead is because nothing new has come out. If Maxell stopped making any recordable media after vhs, no cd's, dvd's or anything else - does that mean vhs is 'current tech'? I would say no since Verbatim, Sony and others transitioned to optical media.
Obviously so does Maxell but it was hypothetical to prove the point that old tech isn't still relevant just because it doesn't yet have a replacement from said company. I don't see any advantage to buying a bunch of hardware for 10mo use with hopes that zen 'may' be something great. I say that with hesitation being realistic, it could be or it could be another bulldozer and there's no dispute how that panned out.
Nothing dead about haswell or devil's canyon, both will easily serve someone for a good 4yrs or more. That's being conservative. None of intel's upper end mainstream i5's or i7's have been '2yr and replace' type chips and the number of people still running sandy bridge are proof of that. No harm in waiting on zen but while I'm not bashing it I'm not going to artificially praise it either. I don't do that for intel, not about to do it for amd. Speculation, hype and adverts mean squat, performance in hand is all that matters. It either delivers or it doesn't.
If someone had to go with amd, of the choices originally considered the fx is the better of those two.