Missed opportunity, if you ask me, and I find the entire "new" lineup not really all that new.
Disappointments: 1. No Dolby Atmos 2. Entry-level devices still only single-band 2.4Ghz wi-fi
Save your money and buy an Apple TV 4K, then....
Roku supports Dolby Atmos on streaming sites that offer it. I don't have my Ultra connected to an Atmos enabled AVR, but when I did I had Atmos from Vudu, and I believe that Amazon also now offers it. It's Dolby Vision they dropped the ball with. Nvidia added it to the new Shield. And from what I read on other forums, the Apple TV has its own set of issues. There just isn't a single, do it all streaming device yet. The Shield is the closest for me, since I can watch all my local content, including 4K HDR and lossless audio, without transcoding or compression. For my use, the lack of YouTube HDR is the only thing missing, but that's not a significant demerit at this time. YT just doesn't have that much HDR content that isn't a short demo video anyway.
Dan Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.