Here are the major version release dates and end of life support for Ghost:

Version Released End of Life
Ghost 0.x 2013 2019
Ghost 1.x 2017 2020
Ghost 2.x 2018 2021
Ghost 3.x 2019 2022

For developers managing a self-hosted version of Ghost, use the following guides for upgrades from LTS versions to the latest major version:

If you are using Ghost(Pro) then you are automatically upgraded to the latest version of Ghost.