Today Apple released iOS 4.3.5 for iPod, iPhone and iPad. In the new iOS Apple has fixed a security issue. According to the official change log the new version contains a must security update for iPod, iPhone and iPad users (obviously not for those interested in jailbreaking).
The download links for IPSWs of iPod, iPhone and iPad are given bellow:
- iPhone 3GS
- iPhone 4 (GSM)
- iPhone 4 (CDMA)
- iPad 2 Wifi
- iPad 2 GSM
- iPad 2 CDMA
- iPod Touch 3G
- iPod Touch 4G
Note: Jailbreakers stay away from the update.
For now I highly recommend you wait for a proper untethered Jailbreak for the iOS because 4.3.4 has proven to be quite a challenge and may take longer to develop a Jailbreak for.