Comcast: "Starting today, new and existing customers can take advantage of the following speed increases:
Connect: 75 Mbps to 150 Mbps,
Connect More: 200 Mbps to 300 Mbps,
Fast: 400 Mbps to 500 Mbps,
Xfinity Prepaid: 50 Mbps to 200 Mbps"
https://corporate.comcast.com/press/releases/comcast-boosts-speeds-xfinity-internet-customers
The marketing fluff doesn’t, but they actually did increase upload speeds. Mine went from 10 to 20 up. And here is the DSL reports forum thread from when this round started.
Also, they are testing larger increases. I could get 100 up today, if I had a supported modem.
So, check your actual plan and modem to see what you have now.