Shortly after Ken Kutaragi was sidelined in favor of US head Kaz Hirai (partly due to PS3's launch delays and various other troubles with their gaming business), an analyst at Nomura Holdings drops this bombshell.
The appointment of Hirai could be the start of a shift from hardware to software. I cannot now imagine a PlayStation 4.
Of course, this is just an analyst's opinion, and the more outlandish a prediction they make, the more attention is given to them. Like we're doing now. Damn it.
Five years is a long ways away, and even if the PS4 won't be disc-less, there probably will be a lot of changes in terms of content delivery and hardware between now and then.
Is the PS3 Sony's Last Console [Kotaku]