Mine came in.
Sounds great! I need to spend more time with it but the differences between it and the 90's Dual seem to be pretty subtle overall.
There are no obviously different preamp voicings I can hear so far.
The poweramps are very close. The Dual is maybe a tiny bit more mid focused, while the Triple is maybe just a bit wider with a tiny bit more more upper sizzle and low extension, but it's subtle enough that I can't be totally confident the differences aren't because I just moved a knob on one of the amps or something. I haven't really opened them up to see how much more clean headroom the Triple has, everything I'm describing is from listening on monitors.
Awesome sounding amps.