Comcast just upped their 'Blast' package from 50 to 104mbit at no additional cost.
I'm curious, do you have any other services beside internet through CC?
I started Googling/searching broadbandreports.com to see if there were any tier increases for my neck of the woods mentioned.
Couldn't find any for my area.
Seems many out western US are getting it, or got it as early as December (if a modem reboot was done)
(I saw Colorado/Seattle in news papers and forums)
I'm on 'performance' tier with ~30mb down, 6.2mb up. (Think it's sold as 25/5)
I may ask the household to let me do full wipe/restart of the modem to see if I might get lucky.
Though, honestly, I'm starting to grow frustrated with the internet services I use not be able to maintain feeding me the speed rather than my line not being able to support it.
(Or, Comcast perhaps traffic shaping)
One example - Netflix, though they're paying the Comcast 'tax' for interconnection ties directly, a 1080p show I was watching last night still went down to 240p.
EDIT -
Additionally, attached my latest greatest test from speedof.me - an html5 tester (instead of Flash)
I check about once every 2-3 weeks. I've noticed lately that 1) Comcast changed my area downstream channel modulation from QAM64 to QAM256. 2) My 'top speeds' according to attached charts (and my previous testing) take longer to get to. Speedof.me uses several size data blocks to ensure accuracy and not a 'speed boost' in the beginning. My chart graph used to hit the top lines quicker between blocks.
I'm not sure if that's Comcast's fault, or external cause of this test site/here to there.