Apple has put the finishing touches on XCode 4 and it is now ready for Mac Developers to download.
Update: Macstories was first to report that Apple has now pulled the release and has now reverted to a previous beta. Perhaps there is something interesting in that big download we aren’t supposed to see. Anyone?
Update 2: And it is back.
What’s New in Xcode 4?
- Xcode 4 has a brand new, single window interface for all major workflows
- Interface Builder is now integrated within the main Xcode IDE
- Assistant shows a paired editor with complementary files (headers, UI controllers, etc.)
- Fix-it highlights code where an error is detected, as you type, and can even fix it for you
- Version editor shows a live comparison through SCM history, using Git or Subversion
- LLVM compiler 2.0 includes full support for C, Objective-C, and now C++
- LLDB debugger is faster, and uses less memory than the GDB debugging engine ( see notes below on how to enable the LLVM compiler or LLDB) debugger
- Instruments adds System Trace, and new iOS instruments including OpenGL ES
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