There's a method in the SCCM 2012 PowerShell cmdlets that appears to be retrieving the expired status. Here's the c# code (decompiled from the dll AppUI.PS.AppMan.dll on the SCCM server)
private bool IsApplicationRetired(IResultObject applicaction)
{
IResultObject[] resultObjectArray = null;
int integerValue = applicaction["CI_ID"].IntegerValue;
object[] objArray = new object[] { integerValue };
resultObjectArray = base.ExecuteQuery(string.Format(CultureInfo.InvariantCulture, "SELECT * FROM SMS_Application WHERE CI_ID = {0}", objArray));
IResultObject[] resultObjectArray1 = resultObjectArray;
int num = 0;
if (num < (int)resultObjectArray1.Length)
{
IResultObject resultObject = resultObjectArray1[num];
this.isApplicationRetired = resultObject["IsExpired"].BooleanValue;
}
if (this.isApplicationRetired)
{
object[] objArray1 = new object[] { integerValue };
IResultObject instance = base.ConnectionManager.GetInstance(string.Format(CultureInfo.InvariantCulture, "SMS_Application.CI_ID={0}", objArray1));
if (instance != null)
{
string stringValue = instance["ModelName"].StringValue;
instance.Dispose();
object[] objArray2 = new object[] { base.ConnectionManager.EscapeQueryString(stringValue, ConnectionManagerBase.EscapeQuoteType.SingleQuote) };
resultObjectArray = base.ExecuteQuery(string.Format(CultureInfo.InvariantCulture, "SELECT CI_ID FROM SMS_Application WHERE ModelName = '{0}' AND IsLatest = 1 AND IsExpired = 0", objArray2));
IResultObject[] resultObjectArray2 = resultObjectArray;
int num1 = 0;
if (num1 < (int)resultObjectArray2.Length)
{
IResultObject resultObject1 = resultObjectArray2[num1];
if (resultObject1["CI_ID"].IntegerValue != integerValue)
{
this.isApplicationRetired = false;
}
}
}
}
return this.isApplicationRetired;
}