Symptom:
If you update the iOS version on your iPhone and the establish an Anyconnect connection the AC will still report the previous version to DAP. e.g:

*iPhone running 7.0
*DAP reports correct version

endpoint.anyconnect.clientversion="3.0.09179";
endpoint.anyconnect.platform="apple-ios";
endpoint.anyconnect.devicetype="iPhone5,1";
endpoint.anyconnect.platformversion="7.0";
endpoint.anyconnect.deviceuniqueid="e44b802fa4853d3d1eb99e16bf5b3205bd7a5191";

*Update iPhone to 7.0.2
*DAP still reports previous version

endpoint.anyconnect.clientversion="3.0.09179";
endpoint.anyconnect.platform="apple-ios";
endpoint.anyconnect.devicetype="iPhone5,1";
endpoint.anyconnect.platformversion="7.0";
endpoint.anyconnect.deviceuniqueid="e44b802fa4853d3d1eb99e16bf5b3205bd7a5191";

*Uninstall the AC app or update to a newer version of AC from App Store
*DAP reports correct version

endpoint.anyconnect.clientversion="3.0.09231";
endpoint.anyconnect.platform="apple-ios";
endpoint.anyconnect.devicetype="iPhone5,1";
endpoint.anyconnect.platformversion="7.0.2";
endpoint.anyconnect.deviceuniqueid="e44b802fa4853d3d1eb99e16bf5b3205bd7a5191";

Conditions:
iOS update