The 4.0.1 update has been released for Xcode 4. If you got 4.0 from the Mac App Store then updating consists of downloading the entire thing again. This is embarrassingly wasteful.
Both the Mac and iOS App Store badly need to offer differential downloads for updates. Games and bulkier apps often run in to 100s of MB, but this takes the cake.
Both the Mac and iOS App Store badly need to offer differential downloads for updates. Games and bulkier apps often run in to 100s of MB, but this takes the cake.