iOS 4.3 Beta Build 8F5148B has just been seeded to developers, and there’s some big changes across all devices to get your head around:
• iOS 4.3 officially drops support for the iPhone 3G and second-generation iPod Touch. iOS 4 never ran particularly well on these devices anyway, and it looks like Apple knows it: they’ve now left all support for less-than-third-gen devices at iOS 4.2.1.
• As predicted, iOS 4.3 brings the Verizon iPhone’s “Personal Hotspot” feature allowing WiFi tethering for up to five devices to all iPhones… or, at least, all iPhones that are blessed with their carrier’s approval.
• A new software option to choose what your iPad’s side switch does: lock rotation or mute. This is a pretty big change: Steve Jobs himself basically said the change in iOS 4.2 from a lock switch to mute was permanent, but it seems user complaints eventually made Apple see sense. Mute just doesn’t make any sense on a non-phone device.
• A new FaceTime icon and full-screen iAds.
• New multitouch gestures for iPad users. You can use four or five fingers to pinch to the Home Screen; swipe up to reveal the multitasking bar; and swipe left or right between apps.
Anything we missed? Let us know in the comments.