There was only one available late in the evening, so I snatched it up as quick as I saw it. There were 2 others a few days later but they got sold out within a minute or 2.
So as I'm setting this up, I can say it's officially much better than the 4K Plus, maybe 5 to 10x times better! It's much more of a premium build, you of course get more features, the back lit remote with find me function is really nice, the mic and speaker in the device itself for voice control, the ports which are so so, a downgrade with the USB 3.0 on the first pro box down to 2.0, and 100mbps Ethernet, but it's something. I'm hoping you can use a dock via the USB c port to get gigabit Ethernet, USB stick to site movies playable with vlc player etc. Others seem to report being able to stream 4k using the USB 2.0 port so maybe it doesn't really matter. But yea it feels faster, you have the potential to use emulated games due to the higher capacity memory and storage and it seems to have resolved a number of the issues with the plus 4k so far. Very happy with it! Hope to get a few more.
Yes I use Projectivy, I use Troypoints and CordCuttersLIs set up videos and a bunch of Ai searches and other YouTube searches to figure out the details on how to configure things like Kodi, Stremio, VPN, VLC, etc and which apps in full to get that they and others recommend.