Sitecore support timelines

8/27/2020

Sitecore versions mainstream support, Extended support and Sustaining support

Product Initial Release Date Mainstream Support End Date Extended Support End Date Sustaining Support End Date
Sitecore 10 2020 31-Dec-2023 31-Dec-2026 31-Dec-2028
Sitecore 9.3 2019 31-Dec-2022 31-Dec-2025 31-Dec-2027
Sitecore 9.2 2019 31-Dec-2022 31-Dec-2025 31-Dec-2027
Sitecore 9.1 2018 31-Dec-2021 31-Dec-2024 31-Dec-2026
Sitecore 9.0 2017 31-Dec-2020 31-Dec-2023 31-Dec-2025
Sitecore 8.2 2016 31-Dec-2019 31-Dec-2022 31-Dec-2024
Sitecore 8.1 2015 31-Dec-2018 31-Dec-2021 31-Dec-2023
Sitecore 8.0 2015 31-Dec-2018 31-Dec-2021 31-Dec-2023
Sitecore 7.5 2014 31-Dec-2017 31-Dec-2020* 31-Dec-2022
Sitecore 7.2 2014 31-Dec-2017 31-Dec-2020* 31-Dec-2022
Sitecore 7.1 2013 31-Dec-2016 31-Dec-2019 31-Dec-2021
Sitecore 7.0 2013 31-Dec-2016 31-Dec-2019 31-Dec-2021
Sitecore 6.6 2012 31-Dec-2015 31-Dec-2018 31-Dec-2020
Sitecore 6.5 2011 30-Jun-2015 31-Dec-2017 31-Dec-2020
Sitecore 6.4 2010 30-Jun-2015 31-Dec-2016 31-Dec-2020
Sitecore 6.3 2010 30-Jun-2015 31-Dec-2016 31-Dec-2020
Sitecore 6.2 2009 30-Jun-2015 31-Dec-2015 31-Dec-2020
Sitecore 6.1 2009 30-Jun-2015 31-Dec-2015 31-Dec-2020
Sitecore 6.0 2008 30-Jun-2015 30-Jun-2015 31-Dec-2016
Sitecore 5.3 2006 - - 30-Jun-2015
Sitecore 5.2 2006 - - 30-Jun-2015
Sitecore 5.1 2005 - - 30-Jun-2015
Sitecore 4.3 2004 - - 30-Jun-2015

More information on this can be found here - https://kb.sitecore.net/articles/641167