Safari and Mac Developer Program members can download Safari 5.1 Developer Preview and take advantage of new technologies, including support for full-screen webpages, media caching with the HTML5 application cache, and better graphics acceleration on Windows. Mac Developer Program members can also download Safari 5.1 Developer Preview for Mac OS X Snow Leopard and Windows. Safari 5.1 will be available for users this summer.
Xcode 4 is now available to all Mac and iOS Developer Program members. Xcode 4 has a streamlined new interface that integrates UI design, coding, testing, and debugging, all within a single window. The embedded Apple LLVM compiler underlines coding mistakes as you type, and is even smart enough to fix the problems for you automatically. Learn more about Xcode 4 .
Get your apps ready for iOS 4.3 which features faster Safari mobile browsing performance with the Nitro JavaScript engine, iTunes Home Sharing, enhancements to AirPlay, and Personal Hotspot. iOS Developer Program Members can now download iOS 4.3 GM seed and SDK GM seed from the iOS Dev Center . Be sure to update your iPad apps so they take advantage of iPad 2 features including the powerful Apple A5 chip, built-in front and rear cameras, and gyroscope.