The first time I read about this was in a brief article at IGN.
http://www.ign.com/articles/2013/02/...ine-connection

It mentions that the next-gen Xbox will use Blu-ray discs, something I had wondered about.
It also suggested that development sources found Microsoft's next-gen OS "oppressive" and preferred working with Sony's platform. I found that curious.

Whether next-gen consoles prevent playing used games or not is out of my control. I collect video games for a hobby and have little interest in renting digital content. If the next-gen marks the end of owning video games, then I'll just be grateful that I lived through a different gaming era and appreciate my collection of retro games all the more.