I'd just started using all the apps I have that are data hogs, downloading music, and streaming. I don't actually use that much data but I was testing this new "Non-throttled" plan. Sure enough, even though it still shows me on the old plan, I'm past 5GB now and still normal.
The lady at T-Mobile said all the plans were automatically updated on their system. It just hasn't updated via my account just yet.
My data counter stopped showing me a blue circle around 3AM on the 9th. I'm guessing that's when they did the upgrade for us!
Yes, I'd got up constantly through the night because I was excited for some reason. Haha.
Good luck on making ROM's and other awesome geeky stuff. If you make one for the Note II, I might just try it! ^^.