The World Celebrates Joomla's Anniversary
September marks the sixth year of Joomla! 2011 has been an exciting year, with major milestones and record numbers of users - Over 4% of the entire web is now powered by Joomla's award winning CMS.
Version 1.7 to Joomla 1.8 Timeframe
Joomla 1.6 reached the end of its life cycle in August 2011. Joomla 1.6 will have no further security updates, meaning that if your site is hacked due to a 1.6 vulnerability, you will have no recourse to fix the site, other than to move it to 1.7 anyway.