Apple has posted beta versions of iOS 4.3 to the developer portal, just one day after Verizon’s iPhone 4 event revealed that the CDMA version of the iPhone 4 was running an unreleased 4.2.5 version of iOS.
Builds are available for the iPad, iPhone 3GS, iPhone 4, and iPod Touch 3rd and 4th generation devices. Curiously, a build for the 2nd generation iPod Touch is not provided, however they may still release a public version for that model once iOS 4.3 is out of beta.
Not much is known about the new version of Apple’s mobile operating system, however rumors have been circulating since yesterday that iOS 4.3 would include the unannounced Wi-Fi internet tethering feature that Verizon demonstrated at the event yesterday.
UPDATE: We’ve confirmed that this new iOS 4.3 build enables support for 3rd party developers to use the AirPlay video system, including web developers via the QuickTime plugin or the HTML5
UPDATE 2: This build includes the Personal Hotspot functionality demonstrated yesterday by Verizon during the CDMA iPhone 4 event. The new Personal Hotspot section replaces the old Internet Tethering section in Settings.