Sony released a massive FAQ on the PlayStation Blog detailing the PS4’s capabilities and limitations. The system's many capabilities are already well-documented (see our PlayStation 4 FAQ ), but we also plucked out some of the newly revealed limitations so you don’t have to.

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PlayStation fans have long wished for a way to change their PSN ID names. Unfortunately, they’ll have to keep waiting. Hopefully the fact that your friends list can now accommodate 2000 people is a nice consolation prize.You can record, stream, or share any game you want, but certain sections may be off limits. “Developers can select the area of restriction, and what will be restricted depending on game titles,” reads the PlayStation Blog. “In these cases, recording will be temporarily suspended during the scene.”On a similar note, you won’t be able to add voice overs to a shared video clip. You can, however, talk in real time as you’re streaming. At launch, PS4 users also won’t be able to upload game videos to YouTube. Also, the Share button will upload gameplay videos to a Facebook account, or it will let you stream gameplay to Ustream or Twitch.Taking a page from the Wii’s playbook, the PS4 will not play CDs. It also won’t support MP3 playback, nor will it include a music visualizer. These decisions – apart from the loss of a music visualizer, which is a tragedy – can be traced back to Sony’s pushing of its cloud-based music service, Music Unlimited.Remote Play won’t work over 3G. To stream PS4 gameplay to your Vita, you’ll need a WiFi connection. Sony "strongly recommends that Remote Play be used within the same WiFi network where PS4 is connected."DualShock 3 controllers will not work with the PS4, nor will PS3 Blu-ray remotes. Your Move controllers will still function with the PS4, but only in games that are built for the new system. PS3 Bluetooth headsets will also not work with the PS4.The light bar on the DualShock 4 cannot be turned off. According to PlayStation, “The light bar also serves as an indication of whether the DualShock 4 controller is turned on. Across different games, the color and brightness of the light bar on the DualShock 4 controller can be adjusted by game developers, but it cannot be completely switched off.”For the full FAQ, head on over to the PlayStation Blog

Brian is an Associate Editor at IGN. You can follow him on Twitter , but only if you like Dota.