It will depend on what the local cable provider (TW,Comcast,?) does. Earthlink depends on local company for hardware support, so whatever they do , Earthlink will follow.
I am getting my Earthlink internet cable ( 20/2) through time warner cable. ( timewarner handle installation, billing. for earthlink )I am looking to the New speed 30/5 and 50/5. I wish that timewarner will allow us to get it through earthlink