Very nice

Valhalla Supermassive one to check

Flying-Reverb

I think feeding the shifted reverb back into itself is an essential part of the ‘shimmer’. Without that it would be a static pitch shfted ‘verb, with it you get the typical shimmer ‘whoosh’ where the effect disappears up (or down) out of the range of human gearing.

Although I would not say it was “invented” that precise year, in 1986 Brian Eno entered the room where With or Without you by U2 was being mixed (Eno co-produced the track) and told the mixing engineers to change the intro by using loads of effects and feedback them into each other. We know a reverb was pitch shifted somewhere in that effects chain and the output sent back to the reverb. Then the track became a hit and started the niche popularity of “shimmer” as well

in my personal understanding shimmer reverb is not necessarily exactly or only one octave higher, but theres always pitch shifting involved. i dont know where sos got their definition from, maybe shimmer was invented as just one additional layer until it was developed into wilder things.
you get devices with one and two octaves higher for example, or with other intervals.
so my basic definition of shimmer reverb would be that it is “a reverb tail which is pitch shifted in some way”.

Defining what is Shimmer reverb, Sound on Sound put it like this:

“the so-called shimmer reverb effect, in which each note is followed by a reverberant wash of sound an octave higher than the original”

Is that basically what sets shimmer reverb apart from other reverb FX ?