This Pedal is currently available.
Legendary JCM800 in a Pedal
Twin-Channel Guitar Preamp Faithfully Recreates the Sound of Legendary JCM800 in a Pedal with Independent Channel Controls, Pre/Post Boost, Optional Cab Sim and Dedicated Outputs for DI and Headphones
https://www.tcelectronic.com/product.html?modelCode=0709-AJV
TC Electronic Ampworx JIMS 800 Hi-Gain
TC Electronic Ampworx Hi-Gain Series
TC Electronic 0709-AJV86-001