According by Eventide FB page ’ Something new is coming Tuesday, stay tuned! 
Some type of wavefolder?
A short teasing time with an actual date at the end 

Will it be a plug-in? Seems like it by seeing their site https://www.newfangledaudio.com
Sounds like Eventide have been hanging about with Rab and Sean from Autechre… I approve of this (and the short lead in time for the tease!).
ringmod / comb filter/wavefolder thingy…
i’ll probably buy it if its a cheap is ios plugin.
Fangler ?
The Newfangled mastering bundle is great, it’s weird but very good.
Hmmm, thought so too.
I like that a lot. One note does all that??? Maybe it is hardware as shown in the teaser?
Edit: @NoiseLab is probably right about software

nice sound.
Sounds nice, thinking about the throbbing sound and the name “pendulate”… it would suggest a time based LFO controlling a modulation effect (pendulum + modulate = pendulate)
A time based wavefolder would be cool…but in hardware would be excellent…
I just want to point out that it’s being released on “Tuesday”.
i think people are in for a surprise. 
Its free!!
Can’t see it on the eventide site yet…
Of this, I am fairly certain: Octatrack users will be very happy.
just saw this:
https://www.jrrshop.com/newfangled-audio-pendulate
the pendulate landing page requires a login but it’s not working for me - i’m already logged in to the eventide site and adding the same login info to this page says ‘nope’… guess it’s just not gone live yet.
https://www.eventideaudio.com/promo/pendulate
great sounding synth. nice that it’s different than what’s out there. i like the way patching works.
