As predicted, iOS 4.3 has just dropped and is ready for download now onto supported hardware, running the gamut of third and fourth generation iOS devices from the iPhone 3GS to the iPad 2.
Here are some direct links to iOS 4.3 downloads:
• iPhone 4
• iPad
• Apple TV
Changes in iOS 4.3 include faster web browsing thanks to the Nitro JavaScript engine, personal hotspot functionality for AT&T iPhones and iTunes home sharing, allowing users to stream their iTunes libraries directly to their device. Full details are available here.