This will start in June. That will save me $35 a month that I was paying extra for unlimited cap space. While I regularly exceeded the old cap of 300 GB, I never came close to 1 TB.
I still may switch to Google Fiber if it comes to my neighborhood (the first rollout is happening in a couple of condo developments in downtown Nashville right now), but I have been mostly pleased with Comcast these past few months.
Well with the Charter merger with TWC they are supposed to not impose any caps, probably forced Comcast to do something to look somewhat decent 
. But good news for you!
Oh google fiber is my dream 
That is good news. I need to find out more about that because when I was talking to customer service last Saturday about picking up my upgraded router we were discussing my data plan and she reminded me I had a 350 cap. That announcement does say effective in June so what she told me is true for now but I may be calling them back and ask if I don’t get an email from Comcast about it soon.
Now that it is June 1, my data cap was indeed raised to 1 TB. Yay!
I hit my 300 GB limit last month on May 15, so I have been trying to have my family limit their usage (the Tablo was one of the few safe streaming options). We still hit 425 GB for the month. With a full terabyte, I don’t have any worries.
Caps? What are those? 
Yeah, the Comcast caps really stink. When I first signed up with them after ditching Windstream I hit my 300GB cap all the time. I got tired of it so I upgraded to Business class service. Now I get 50down/10up for the same price every month with NO CAPS at all. I love watching my usage meter on my router spinning like crazy.