Joomla! version 3.0 released on 27 September 2012. There are many our customers and our friends are wavering between staying with Joomla! 2.5 or upgrading to Joomla! 3.0 of their websites. In this article, we will help to clear your deciding.
Please view the release cycle of Joomla! release cycle from Community of Joomla.
As you can see, the time bar which Joomla! 2.5 is supported is the longest and Joomla! 3.0 is so short. It's really simple to choose, isn't it?
if you keep a keen eyes on time bar of Joomla! 3.5, you'll agree with our follow recommendation: "Let stay with your Joomla! 2.5 website and wait for upgrading to Joomla! 3.5".
And with one-click update feature in Joomla 2.5, you can see how quick and easy updating from Joomla 2.5 to Joomla 3.5 is. This feature can be found by going to Components > Joomla! Update > Options.
This is just only my our recommendation, Joomla! 2.5 or Joomla 3.0 depends on you.