X300 service UNLIMITED data?

Signed up for this a week ago.

Had problems getting 300 Mbps upload speeds so finally picked up an XB8 gateway and got that working, now getting the speeds.

But on my account page and on the Xfinity app, it shows the 1229 GB limit.

In chat, the agent assured me that I have unlimited data and the the app will update to reflect that.

Has anyone gotten warned or charged for going over the limit on an XFi service?  Supposedly Comcast is scrapping data caps but I guess we'll have to see it to believe it.