The C-band is only available on certain Verizon plans....
Do you have the correct plan?
As for "coming weeks." I guess that could include anytime from when you read it till

freezes. (Yes, there is such a place...Hell Michigan, SW of Detroit.
"Verizon, which will offer C-band under its Ultra Wideband (or UW) branding, will be limiting access just to a handful of its unlimited options. This includes the Do More, Play More or Get More plans sold today as well as the older Above and Beyond unlimited options from a few years ago.
If you don't have one of these plans, you won't be able to take advantage of the faster network even if you have a phone that supports it."