
In Xcode 4, I see this for my target summary:
The \"Version\" input corresponds
See the Apple documentation on uploading binaries.
Numbering versions and builds: iTunes Connect extracts its prerelease version number and build number from the binary. The prerelease version number is the Xcode Version number, or the "Bundle version string, short" key in the Info.plist. The build number is the Xcode Build number, or the "Bundle version" key in the Info.plist. The prerelease version number and build number will be shown on the Prerelease tab, as described in Viewing Builds.
Uploading a Binary For An App