Rumors that T-Mobile plans to introduce an unlimited data plan for streaming video services circulated Thursday following a Twitter post from journalist Evan Blass, who tweets under the handle @evleaks. The company would allow unlimited high-speed data to be used to watch select streaming from services such as Netflix and HBO under its "Uncarrier 10" campaign, he suggested. The Uncarrier 10 press event will be held Nov.10 in Los Angeles.