It's official: the PlayStation 4 will NOT block the playing of used games. Rumors had suggested that it would in the weeks and months leading to Sony's PS4 announcement, but Sony Worldwide Studios boss Shuhei Yoshida confirmed that that is not the case, in an interview with Eurogamer.
"So, used games can play on PS4," he responded after conferring with PR reps when pressed for confirmation. It doesn't get much more straightforward than that. Eurogamer also learned that recently discovered Sony patents that suggest used games COULD be blocked has nothing to do with the PS4.
Gamers, breathe easy. Just remember that the relief you're feeling is nothing compared to the relief that GameStop execs must be feeling at this news.