DOCSIS 3.1 is billed as "cutting edge cable broadband technology" that will "double downstream capacity on NBN Co Hybrid Fibre Coaxial (HFC) network" and it is finally being enabled.
US cable and Internet provider Comcast has developed its own DOCSIS 3.1 modem which when combined with a DOCSIS 3.1 network can deliver 1Gbps+ speeds.