I'd say after looking at the specs, I think PS3 will again aid in bringing newer tech to the most consumers with it's adoption of USB 3.0, however, an even faster serial interface I heard could supplant it within the PS4's life span!
http://www.whoratesit.com/Faq/USB-40-and-USB-30-release-datesspeeds/1
The BluRay continues, thankfully, some people thought disc media might fall by the wayside, even commercial DVDs, however, you can still buy new vinyl LPs in this day and age because analog still rules over digital. While digital in our lives pervades due to it's native state being in line with electronic circuits by their very nature.