I anticipate expanded usage of both Blu-Ray disc and online distribution like is already the case today.
At least with regard to the next Playstation, I think it will certainly have a more advanced Blu-Ray drive. This for easy backwards compatibility (with PS1, PS2 and PS3), Blu-Ray movie support (including CD/DVD backwards compatibility) and providing the biggest canvas for PS4 games (and support retailers, as every downloaded game isn't bought at retail shops).
There's room and potential for an online-only download/streaming console though, this would allow the device to potentially be smaller than the rival consoles. But when does next-gen start, we don't know for sure. If a new console launched today would that be current gen or next gen? I don't think in generations, there's overlap. A new console could be like two Wiis ductapped together (so less powerful than for example a PS3). Naturally as we move forward, more people will be online with better download speeds to enhance this potential.







