Here is the Microsoft Product Lifecycle Policy published on Microsoft official site. https://support.microsoft.com/en-us/lifecycle/search?alpha=Dynamics%20GP Products Released Lifecycle Start Date Mainstream Support End Date Extended Support End Date Service Pack Support End Date Dynamics GP 2015 2/18/2015 4/14/2020 4/8/2025 Dynamics GP 2015 R2 8/30/2015 4/14/2020 4/8/2025 Dynamics GP 2016 5/1/2016 7/13/2021 7/14/2026 Dynamics GP 2018 12/1/2017 1/10/2023 1/11/2028
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