Last week Akamai (with Verizon FiOS as a marketing partner) launched a new high-definition online proof of concept portal aimed at showing off high-definition content delivery over the Internet. The demonstration tells users with connections slower that 7.5Mbps that they can expect "difficulty."

The Akamai press release has a little more detail, and notes the site features content previews from Apple, BBC Motion Gallery, CBS, Gannett, MTV Networks, NBA and more. Akamai also offers up a whitepaper on HD Internet delivery, and their website has more detail on their edge delivery model.