Sony has been rather successful in selling the PlayStation 4, to the point where the PlayStation Network has strained under the load. The company doesn’t want to worsen these problems with its PS4 launches in Australia, Europe and New Zealand, so it’s taking an unusual step: for the first few days after release in these areas, it’s disabling friend activity in both the What’s New and content info sections.
Activity will come back once the initial frenzy is over, Sony says. The decision won’t make a big impact on gameplay when multiplayer and other core features will be available on day one, but it may catch a few players off-guard.
Source: PlayStation Blog