iOS 4.3 beta has been out for some time, but it didn’t really get released. Now we know why. It’s tagging along with the iPad 2, which means a March 11 launch. iOS 4.3 will feature the Nitro JavaScript engine from Safari on OS X, as well as new iTunes Home Sharing features that let you play content from desktop iTunes over WiFi. There’s also the updated AirPlay with new features from the beta, like ability for App Store apps to share audio and video.

Apple’s also finalizing the new option that lets you assign the side switch to either rotation lock or mute, and it’s adding Personal Hotspot support. There’s also those rumoured iOS versions of Photo Booth and FaceTime for the new cameras. It’ll be a free download for all iPads, the GSM iPhone 4, the iPhone 3GS and the third- and fourth-gen iPod touch when it’s released on March 11. Sadly though there’s no mention of the CDMA-version Verizon iPhone 4 getting it, so we’re not quite sure when it’ll have iOS 4.3, and why it’s delayed for it.

SOURCE via Apple