Hey, Just arrived...Legit DTS & Dolby licenses from the get go.. As for the RS232 port, at one point it was the most widely used form of communication between devices... Though quite slow..Likes of USB and Ethernet are much faster. I'm awaiting an official response. Will update.

Sure.. I'll endeavor to do all the HD audio testing I can.. As for DTS:X testing, me seeking an AVR to confirm it myself, else Beelink's word would have to do. You in KV area & got ATMOS & or DTS:X capable system? I don't mind dropping by with it.. ..Nevertheless, the GT-King Pro should support Dolby TrueHD/ATMOS, THX & DTS:X, cuz it's already confirmed that the normal GT-King does (well, I'm not sure on the DTS:X 7.1. yet)..but definitely ATMOS & THX, etc.. Besides, the SoC bump, audio superiority is the major marketing factor here... According to Beelink, The Pro supports DTS listen + Dolby Audio decoding technology. Two dedicated processors (ESS Hi-Fi decoding chips) will provide Hi-Fi sound without loss of sound quality.

I expect it to be rooted and so stable Astro Go would be a no no with stock settings. Unless the needed is done. Fingers crossed, Beelink included an Advanced Root switch this time. In the meantime, i also expect the beta app should still work fine on it. Given the proven performance of the "weaker" GT-King, I would be surprised if the HW bump to S922X-H won't perform at minimum, similarly. It'd be great for gaming too. Rest assured, I'll pit both Pro & normal against each other.

Haha.. Folks like us obvioulsy wouldn't be bothered about Netflix HD+, etc... That's what dem smart TV apps are for.
Comparable somewhat but the GT-King Pro stays ahead with better HW..We'll see how it's software side holds up... on the GT-King, there are options to enable and disable Dolby Vision too. I expect the Pro to have it too and it better work. HW differences btw the AM6 Pro vs GT-King Pro includes;
*S922X vs S922X-H
*32GB vs 64GB eMMC storage
*1 vs 3 USB 3.0 ports
*4K@60FPS vs 4K@75FPS
*Widevine L3 vs L1 (expected)

According to the YouTube video above..Benchmarks-wise, the AM6 > AM6 Pro (prolly cuz lower clocked CPU..2.2 to 1.8) > GT King. Hmm.. As for auto frame rate switching etc.. Hopefully that's fixed right out of the box, else might have to install & configure the AFRd app on the GT-King Pro as well, pending a fw update that does it for good.

I read that the dolby and dts audio addition is for local decoding. If it is a passthrough to other decoding devices, those are not even necessary.

Watched the review and was pleasantly surprised at the differences in PQ output vs the Nvidia Shield. IMO, the PQ from the GT-King Pro looks better. Especially being OOTD with little to no fine PQ settings to tweak. Unlike the Shield, I'm going to assume that the Shield too can be tweaked to look better.

I was also able to get the latest Antutu version to install and complete it's tests on the GT-King Pro.. Chigz probably didn't install the accompanying Antutu 3D package and grant that data access first, before running the benchmark test. From my review, and the images below, we can see that the GT-King Pro scored 147479 on the Antutu benchmark test. This indicates (also mirrors my earlier conclusion) that the Beelink GT-King Pro belongs to the 3rd or at most, the fourth spot on his chart. Though outside the Nvidia Shield offerings, it's indeed the second best TV box currently available for purchase. So I'll stand by that. 

Sorry bro.. gt1 mini A. Ive have install the new unifi playtv 1.2.8. However cant even go to login page. Try uninstall, reboot n reinstall but still cant go in. Now back using the old one