I just upgraded to the latest Taiko/Roon. I was a little reluctant to do so in that my system has been at it's best recently with Roon v537 and Emile's associated tweak in late April. The addition of the Sablon King power cable to the Extreme is probably a significant factor also!
I never experienced the loss of vividness or incisiveness that others described with recent Roon version upgrades. (maybe that was confined to the 555 upgrade?).
I haven't listened a lot yet, but I think it's for the positive in terms of resolution and space. I thought it may have tipped the balance a little too far in that direction at first, but that's probably a little bit of audio paranoia.
Interestingly, Chris at Taiko, told me the latest Taiko upgrade is voiced on the latest Roon version (555?) and not my older version (537) so given that I never experienced the sq drop associated with 537, maybe my experience is different from others. In any case, I'm happy to be hooked up to the Taiko wagon!
Just curious, has anyone else upgraded from 537 (tweaked version)? It is the latest Roon version where one can refuse to upgrade, so maybe I should stay there in case Roon brings on any unwanted versions in the future!