That sound you hear is millions of iOS device owners rushing to sync with iTunes, as Apple has released iOS 4.3.2.
The update addresses just a couple of issues. It corrects a problem with blank or frozen video during FaceTime calls (potentially resolving a strange bug that some users have complained about) and it fixes an issue that prevented some international users from connecting to 3G networks using the iPad Wi-Fi + 3G. There's some question as to whether or not it will also correct a problem experienced by some Verizon iPad 2 users in getting a 3G signal; Apple previously said it was investigating the issue, but gave no timeframe for a fix.
The release of this iOS update comes less than a month after the release of the similarly bug-fix-ish 4.3.1 and supports the GSM iPhone 4, the iPhone 3GS, the iPad and iPad 2, and the third- and fourth-generation iPod touch. Once again, users of the CDMA iPhone 4 (read: Verizon iPhone) are left out of the update party.
To download and install the update--which weighed at upwards of 600 MB for several Macworld staffers--connect your device to your Mac or PC and click Check for Updates in iTunes.