Nebraska has updated its processing date for Employment Based I-485 Application. Unfortunately there is no change in date (August 31, 2002). I always thank God if the date does not roll back. 
https://egov.immigration.gov/cris/jsps/Processtimes.jsp?SeviceCenter=Nebraska
https://egov.immigration.gov/cris/jsps/Processtimes.jsp?SeviceCenter=Nebraska