3. Release Life Cycle Detail (example: T train) Maintenance Releases 0 ~24 12 ~58 Months First Commercial Shipment (FCS) General Deployment Status End of Sales (EOS) End of Scheduled Maintenance (EOE) Last Date of Support (LDoS, formerly EoL) ~12 to 24 ~18 to 24 Major Created Features ED LD GD
Next, we will take a closer look at the major release life cycle. A release typically “lives” for two to two and a half years from First Commercial shipment to End of Engineering. Each release receives regular maintenance typically ranging from 8 weeks to 13 weeks. Remember, we do not add new functionality during the major release life cycle. Let me summarize the milestones within this life cycle First Commercial Shipment: The beginning date where the product is orderable; initial production delivery of a new software release. General Deployment: This is a key development milestone, which we will discuss in more detail later End of Sales: This is the final date that the product can be ordered. End of Scheduled Maintenance or End of Engineering: Last Date of Support (formerly End of Life): The product is no longer supported by CSE and is removed from CCO.