Does 5G Home Internet Support 5G UC?

Saw in the news today that T-Mobile is massively expanding their 5G Ultra Capacity to 60 million additional people.  That might mean that my area (Escanaba, Michigan) will get an upgrade to UC.  I ordered the 5G Home Internet today hoping that it will support 5G UC.  Does it?  I see that the new modems support N41 5GB UC and C Band, so you'd think it would work.  I am hoping for some incredible speeds.  I currently have Spectrum for $85 monthly that does 300 Mbps down and 10 Mbps up.  Awesome download speeds, pitiful upload speeds.