The goal of this issue is to give Piwik administrators the ability to choose which Piwik major version they want to use.

Current Update Settings

Proposed changes to Piwik core

• When a user selects "Use the latest beta release = Yes" then....
  • the very latest beta release will be used
  • (no change to this behavior)
• When a user selects "Use the latest beta release = No" then....
  • Add a new label "Use the latest release" with two radio buttons:
  • Yes (recommended, Piwik 3.0.0)
  • No (use Long Term Support version, Piwik 2.15.1)

Changes to api.piwik.org service

• the https://api.piwik.org/1.0/getLatestVersion/ service needs to be updated to know whether a given Piwik user is on the LTS channel or not
  • Add a new parameter eg. lts=1 or use_lts=1
  • when lts=1, return the last 2.X version
  • when lts=0, return the latest stable release

(fyi: I can make those changes to api.piwik.org whoever works on this please let me know)

Notes

• high value to user: from the UI one can choose to use auto-update to the bleeding edge (beta), the latest stable release (3.X) or the Long Term Support version.
• This is a change we should make in Piwik 2.15.0 as users need to be able to use the LTS version
  • LTS is announced in Introducing Long Term Support for Piwik 2.X #8546
• the UI and feature should be designed to auomatically work when we next release Piwik 4.0, Piwik 5.0, etc. ideally we wouldn't need to change anything in Piwik core.