Au programme selon les changements officiels français ça donne :
La stabilité du logiciel système lors de l'utilisation de certaines fonctionnalités a été améliorée.
Autrement dit rien de clair.
Cependant, les changements en anglais indiquent :
PlayStation®Network
Set the Group of Players Who Can See Your Trophies
You can now set the group of players who can see your trophies under PSN [PSN] > Account Management [Account Management] > Privacy Settings [Privacy Settings].
To change this setting, select [Show Trophies].
Anyone Any player can see your trophies
Friends of Friends Your Friends and their Friends can see your trophies.
Friends Only Your Friends can see your trophies
No One No one can see your trophies.
You can adjust for each game whether to show the trophies you earned. Go to PSN [PSN] > Trophy Collection [Trophy Collection] to select a game, press the button, and then select [Privacy Settings] from the options menu. To hide trophy information for a specific game, remove the checkmark from [Show Trophies for This Game] for that game.Video
Support for BD/DVD closed captions
You can now display closed captions when playing BDs and DVDs.
Displaying Closed Captions
1. Select [On] under (Settings) > (Video Settings) > [Closed Captions].
2. Press the button during content playback to display the control panel.
3. Select [Closed Captions] under (Subtitle Options).
This setting is active only with content supporting closed captions.
Il est ainsi question de sous titres pour les films et de confidentialité de visibilité de vos trophées ..
N'oubliez pas, vous pouvez télécharger le PS3UPDAT.PUP de mise à jour PS3 ici
Source : http://us.playstation.com/support/systemupdates/ps3/ps3-4-53-update/index.htm