The update as the release notes state “contain improvements and other bug fixes”. In particular iOS 4.3.2 fixes a bug which would occasionally cause a blank or frozen video during FaceTime call. It also fixes 3G connectivity issue being faced by some iPad users and contains security updates.
Apple has been releasing maintenance updates quite frequently of late. This probably won’t be an issue for many however, users who jailbreak their devices need to first wait for the Dev-Team to confirm if existing hack works or if it requires an update to work with with latest update.
This time just hours after the update was released, the firmware was jailbroken and a tethered solution was available for users. 9to5 Mac notes that:
You will need custom PwnageTool bundles for iPhone 4, PwnageTool version 4.3 and tetheredboot utility. A Mac OS X machine and iTunes 10.2.1 are also necessary. Do not jailbreak if you’re device is unlocked because there is no unlock for the new baseband on iOS 4.3.2 yet.