Apple has released the firmware update for iPhone and iPod Touch, the firmware is yet not available through iTunes but you can download it from Apples website. In iPhone firmware Apple has added Modem firmware v4.2.13_G, TIFF Exploit patch, battery statue icon in iTunes, International Keyboard and custom ringtones section. There is no indication that Apple has added the voice note feature to the iPhone. In iPod Touch Apple added the Add Event functionality to its calendar application. You can download the updates from Apples website [Via Macrumors.com]
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iPod Touch