Today, the FCC defines broadband as a connection with download speed of at least 4mbps and an upload speed of at least 1mbps. This definition was an upgrade from the previous definition of 768kbps prior to 2010. As of May 2014, the FCC has been inquiring and seeking comments on increasing the definition to between 10mbps and 25mbps.
Several cable companies have boosted their top speeds in 2014. In late April, Time Warner Cable announced major speed increases in specific parts of their service area (Los Angeles and New York) with a top speed of 300mbps.