Xcode 4.1 Preview 5 New
- New Jumpbar style scheme toolbars
- Enhancements to Xcode Source Control Management
- Enhancements to Performance Measurement and Analysis
- Interface Builder now supports NSPopover and NSWindow animations and behaviors
- Additional bug fixes and stability
- Supports Mac OS X 10.7 Lion preview 3 and include iOS SDK 4
You can Xcode 4.1 Developer Preview 5 from Mac Dev Center.