Manifest Template for OTA iOS Ad Hoc Distribution

AdHocManifestTemplate.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>items</key>
	<array>
		<dict>
			<key>assets</key>
			<array>
				<dict>
					<key>kind</key>
					<string>software-package</string>
					<key>url</key>
					<string>URL-OF-IPA-FILE</string>
				</dict>
			</array>
			<key>metadata</key>
			<dict>
				<key>bundle-identifier</key>
				<string>BUNDLE-ID</string>
				<key>bundle-version</key>
				<string>1.0</string>
				<key>kind</key>
				<string>software</string>
				<key>title</key>
				<string>APP-NAME</string>
			</dict>
		</dict>
	</array>
</dict>
</plist>

 In old version of XCode, for example, in XCode 5,when I distributing the ipa of my App,  just clicked "Save as Enterprise" button and enter my application URL,then I got a plist. However, in XCode 6, I can't find any entrance for it. 
Instead of it, I use the plist that generate from Xcode 5,it can works well on IOS7 targets, nothing happens on IOS 8 targets, however.
Does apple limit the In House Building feature for developers? Is there a good way to solve this problem?
Looking forward to your reply.