Just got this 1361.0 OTA firmware update installed on my Q80R. I can't tell what's new and improved on this release, but it doesn't have the eARC update. (Edit: See my post further down with the details about this release from the Samsung Dutch site)
I just don't trust Samsung. That's why I pre-ordered the ARCANA from HDFury. It splits the Atmos and sends to my Sonos Arc and sends the video to my non eARC TV. RESULT: Full uncompressed Atmos
Also, the adapter sends Dolby Vision to Samsung...which is a plus.
I just bought this TV with the corresponding soundbar. I just chatted with a Samsung support rep, she confirmed for me that the 2019 Q80R QLED TV is in fact one of the TVs to receive the eARC update. She went on to say that unfortunately Samsung hasn't released an official date, but speculation is that it will be released later this year or early next year.
I have attached pictures of my chat below as proof that Samsung has confirmed this info.
Thank you so much for that post - At least theres some light at the end of the tunnel so to speak. I'm looking forward to hearing what Atmos sounds like out of the Sonos Arc I bought specifically for Atmos and after the research I did where I found my Samsung Q80R would support Atmos.(imagine my suprise and dissapointment).