Wait for the other shoe to drop.
The pattern is raise the speed, then wait 60-90 days and raise all the prices.
I totally agree. Comcast is not the worst. My parents happen to live in an area serviced by a ma and pop cable company (Service Electric Cablevision). 20/2 internet with a 200GB cap for $51 a month. Comcast, which is available to the community less than five miles away, crushes this. This is only 45 minutes from Philadelphia!
Then again, Comcast tries to get me to "upgrade" to packages costing half as much as my current one on a regular basis, so who knows what they were going for.