Although it is still some time away (Super_Secret predicts PS3 Firmware 3.0 won't be out during the summer, but before the holidays) the folks at VG247 (linked above) have uncovered some additional details on it.
To quote: The software upgrade has been described to us as "a huge overhaul", and was compared to NXE "in some respects".
The before-rumored reputation system will be included. We were told that, "A reputation system in which users will be able to evaluate each other will be provided for... game applications.
"There will be a new API available to so the user can... allow users and also obtain users' reputation."
A "grief reporting system" will be included in the update, allowing gamers to take screens of offensive players and submit them to Sony. Apparently this is going to be similar to the LBP system, and is likely to include a text input.
Firmware 3.0 will allow patches will be downloaded in the background, meaning you'll no longer have to sit staring at the screen while Random Shooter updates itself with a 500Mb fix.
There's more. Simultaneous HDMI and digital optical outputting will be included in the release, a move likely to bring big smiles to the audio heads in the crowd.
Of course for the time being, these are just rumored features that are subject to change... but still interesting none the less if true!
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