image by Daniel Perez Arcas
This article is a summary or compendium of relevant information regarding the disappearance or end of life of Joomla 2.5. It is imperative to migrate immediately to the stable version 3.4.1
Here I present a summary of the most important points on this topic, which is currently scattered information on the pages of Joomla. At the end of the article, I quote the offcial sources.
Since December 2014, the Joomla 2.5 version reached its “end of life” and since then there have been no updates beyond 2.5.28 (1).
On June 30th, 2015 Joomla 2.5 extensions will be delisted from the official directory of extensions (2). This is according to the plan from mid-2011 when the Production Leadership Team (PLT) announced the new Joomla release cycle. (3)
This tutorial will help you to migrate from Joomla 1.5 versions, and also serves as a reference for 2.5 complex migrate sites:
https://docs.joomla.org/Planning_Migration_-_Joomla_1.5_to_3
https://docs.joomla.org/Planning_for_Mini-Migration_-_Joomla_2.5_to_3.x
Article source: Carlos Olivares Pérez, Joomla! Magazine.