Denon and Marantz introduce 8K HDMI 2.1 upgrade for AV receivers | What Hi-Fi?
Denon and Marantz receivers built since May are free of the HDMI 2.1 bug | What Hi-Fi?
PS5 And Xbox Series X-Friendly AV Receivers Reportedly Hit By Major HDMI Bug
Denon AVR-X1700H 7.2 Ch. HDMI 2.1 receiver - Value Electronics
Denon AVR-X2700H 7.2 Ch. HDMI 2.1 receiver - Value Electronics
For anyone that is looking for a new AV Receiver with a new HDMI 2.1 board, Costco just released the Denon AVR-S760H : r/hometheater
Report: latest AVRs from Sony, Denon / Marantz, Yamaha, etc. have a bug in the HDMI 2.1 chip - unable to pass through the 4k120hz HDR10 signal (german article) : r/xboxone
Denon and Marantz will add HDMI 2.1 to these older receivers for $600 | Engadget
Denon & Marantz announce new HDMI 2.1 receivers, upgrade program - FlatpanelsHD
Denon and Marantz AVRs made after May 2021 are HDMI 2.1 bug free | AVForums