I'm about to pull the trigger on this but I'm curious to know if they will still work with the new Cygnus release when it hits the FM3?
Good question, and I don't know the full answer yet.
I'm not part of the beta team for Cygnus for the III, but am on FM3 beta team so when it hits there I'll know more, if not sooner.... I am speculating (that means "guessing" - no insider knowledge claimed here!) it's still going to be some time before Cygnus gets a final public released (not imminent?), and anything really new needs a lot of beta testing as part of the natural new firmware process.
My gut tells me that, if Cliff is re-doing the pre-amp and power amp algorithms, then yes, the Live Gold and Naked Amps and other TonePacks may need to be reset and updated.
If FAS has to update the existing Fractal Factory presets for Cygnus firmware, then that's a true cue I need to as well.
I have two Axe- IIIs, so I can A/B between firmwares pretty easily and hear what's happening between a Live Gold firmware 15 ARES and a Cygnus 1.x identical preset.
So if amps change dramatically in tone under Cygnus, (and it may very well be that some do and some don't), that means it will take some months to update the 2600+ presets across all my Tonepacks. (Unfortunately that pushes off the work on other new projects I really want to do for you guys, like a 1000+ Effects Block library that will work with Live Gold and Naked Amps for example, or Brit Rock Royalty #2).
When I know more I'll say so here. I just know it will ALL be better than ever once it's all done!
But for now, as always, stay on current release firmware as found on Fractal page here - that's always the public one to use, and I do not recommend people updating to any new public beta unless they really know what they are doing (always back up first!).