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Sony are releasing an update for the PS3 today which updates your system to v4.20.

Software update v4.10 added a feature that enabled you to hear your own voice through the Wireless Stereo Headset when playing multiplayer modes. This type of audio feedback is known as “sidetone.” Based on feedback the new update will improve sidetone audio performance by giving you the option to select one out of five levels for microphone audio, or turn the feature off completely. For those of you who use the Wireless Stereo Headset to watch Blu-ray or DVD movies on your PS3, this system update will also enable virtual surround sound functionality, giving you a superior audio experience.

This update will also allow you to set the amount of time that the system will wait before turning itself off automatically for [Video/TV/Music/Photo] and for [Game/Other Features].

Additionally, saved data management has been improved. You will now be able to select multiple saved data items and delete or copy them as a group.

More details will be made available as it rolls out today and I’ll update this article when that happens.