Well that was fast ! Apple has just seeded second beta of iOS 4.3 to developers. And as always, this build is meant for developers only. Only members enrolled in the iPhone Developer Standard or Enterprise Program can access these bits of by signing into Apple Developer Connection.
More updates on iOS 4.3 Beta 2 as it comes.. Stay tuned !!
Download iOS 4.3 Beta 2 for iPhone, iPad, iPod touch, Apple TV and SDK