The 10.0 release introduces support for USPS CASS Cycle O. The CASS Cycle O includes several new DPV options, TotalDPS calculations and Informed Addressing. Not related to CASS Cycle O are the dropping of support for the Z4Select product. CASS Cycle O is scheduled for a minimum of 5 years. Finalist 10.0 also uses a new internal database structure that is not compatible with prior release and prior releases are not compatible with the 10.0 release. You must keep the database version in sync with the Finalist product releases.