Joomla 2.5.5 contains:
11 new features added
2 Security issues fixed
113 tracker issues fixed
ความสามารถใหม่ที่เพิ่มเข้ามา
Add abiltiy to copy a template (Mark Dexter)
Implementation of Terms of Service (Peter Osipof, Jean-Marie Simonet)
Option to disable the ability to change the Username in Profile (Leo Lammerink, Jean-Marie Simonet)
Set the CSS class for JForm field label (Viet Vu)
Add counter to redirect component (Ronald Pijpers)
Add feature readmore in feed items. Also bugfix for fulltext in feed items.(Jurian Even, Jean-Marie Simonet)
Media formfield: show preview (Benjamin Piek, Jean-Marie Simonet)
Add the ability to limit the number of password resets within a time period (Mark Dexter, Sudhi Seshachala)
Improve user feedback during automatic version update (Mark Dexter, Ofer Cohen, Jean-Marie Simonet)
Add buttons in each menu selection tab in the module admin manager. (Mathieu Cattin)
Multi-File Upload (Elijah Madden)

ดูเพิ่มเติมได้ที่
http://community.joomla.org/blogs/commu ... n-255.html