Is the Monitor2 output definitely HDMI2.1 8K, I don't think it says that Monitor1 is ALLM, it simply claims now ARC/eARC officially, do you think Sound United will update Denon's X8500H/X6500H & X4500H to HDCP 2.3 as it does seem possible if Yamaha could update their 2018 AVR's to HDCP 2.3 with their 2.0b chipsets.So, from that picture we can see:
a) only one HDMI 2.1 input - HDMI IN 7 (8K)
b) two HDMI 2.1 outputs - MONITOR1 and MONITOR2 - MONITOR1 with eARC & ALLM
c) ZONE2 HDMI output is an HDMI 2.0 port (4K)
d) all HDMI outputs and inputs are HDCP 2.3
Still disappointing that not all 7 inputs are 2.1 like Denon's previous updated flagship X7200W/WA which had all 7 inputs on the board as 2.0a then 2.0b due to the Dolby Vision/HLG support update.