Disney and Comcast promised to launch this in 1Q2021 and, with only a few days to spare, they have now finally started the rollout!
Now, the waiting begins (again) for us...
I bought a Nvidia SHIELD TV when I had the older Nextbox 2 PVR.
I just switched to Ignite TV, and was happy to see Netflix, YouTube and Prime Video available as Ignite TV apps.
Hopefully Disney+ will be available on Ignite TV soon, but until then I can also access all apps on SHIELD TV.