Xcode now works like most other IDE's where there is a workspace and an integrated Designer tool. Yes, now Interface Builder can run inside of Xcode and the single window model works really well.
Some Notable Changes
- Single Window model
- Built-in Interface Builder
- LLVM Compiler
- Faster Debugger
- Version Editor and Management
- Improved Instruments.
The most significant change is the Single window model UI which consolidates many windows that are used for key development tasks. The new Xcode 4 work area called a workspace has several UI elements that make it easy to work on many different tasks while keeping your editor front and center. The new workspace window contains a Toolbar, a Tab bar, a Navigator area, a Utility area and a Debug area. You can have as many workspaces as you want (File>New>New Window creates a new workspace window). The workspace Navigator provides tools for viewing and managing your project. The Utility area is for inspectors and properties of selected artifacts. The UI changes combined with the improved compiler and faster debugging make it so much easier to develop software faster and more efficiently. There are many changes and the only way to understand them is to use them.
