Apple Releases Second Developer Preview of Xcode 4 - MacRumors
Skip to Content

Apple Releases Second Developer Preview of Xcode 4

by

124928 xcode 4 dev 2

Apple yesterday released a second developer preview version of Xcode 4 via its developer site, also posting a significant amount of new information about the release on its site. Xcode 4 brings a significant overhaul to Apple's tools for building Mac OS X and iOS applications, including a transition to a single-window application with Interface Builder integrated directly into Xcode.

Xcode is the complete toolset for building Mac, iPhone, and iPad applications - and with Xcode 4, the tools have been redesigned to be faster, easier to use, and more helpful than ever before. The Xcode IDE understands your project's every detail, identifies mistakes in both syntax and logic, and will even fix your code for you. Quite simply, Xcode 4 will help you write better code.

Xcode 4 has a brand new user interface, built upon proven technologies that Apple itself uses to build Mac OS X and iOS, and that have produced over a quarter million Mac, iPhone, and iPad apps.

The first developer version of Xcode 4 was released to developers at the company's Worldwide Developers Conference early last month.

Popular Stories

Dynamic Island iPhone 18 Pro Feature

12 Reasons to Wait for the iPhone 18 Pro

Thursday June 18, 2026 2:17 am PDT by
We're only three months out from the launch of Apple's premium next-generation smartphone lineup, and while we're not expecting a sea change in terms of functionality, there are still several enhancements rumored to be coming to the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth noting is that Apple is reportedly planning a major change to its iPhone release cycle this year, adopting a ...
Rivian Explains Why CarPlay Debate Will Become Completely Obsolete Feature

iOS 27 Adds Major New Feature to CarPlay

Wednesday June 17, 2026 9:10 am PDT by
Last year, Apple revealed that it was planning to allow CarPlay users to watch video via AirPlay in their vehicles while they are not driving, and the company finally provided more specific details about this functionality at WWDC 2026. In a WWDC 2026 video aimed at developers, Apple said the CarPlay video feature is available in new vehicles that support it. When playing a video in an...
Apple Watch Ultra Orange Alpine Loop Action button 220907 big

Apple Explains Why watchOS 27 Drops Support for So Many Models

Friday June 19, 2026 6:07 am PDT by
Apple today detailed why five Apple Watch models will miss out on watchOS 27 and the new Siri AI features that come with it. The Apple Watch Series 6, 7, 8, SE 2, and the original Apple Watch Ultra will not receive watchOS 27, and will only get basic security updates going forward. With the update, Apple is effectively dropping three years' worth of device support in a single software...