Joomla 1.5.15 Upgrade RC what to expect

Joomla version 1.5.15 is available as Release Candidate at JoomlaCode.org. What can you expect from this version?

Several regular expressions are fixed (eregi replaced by preg_match).

Eregi is deprecated in PHP 5.3.0 and php will be removed in version 6.0. By using this feature in PHP 5.3 and later will have an objection E_DEPRECATED action.

Ereg_replace to str_replace by multiple substitutions.

A small memory leak in com_menu is resolved.

Some language strings were added.

SimplePie library is upgraded.

If you use a lot of RSS then this is good news for you.

Upgrade to TinyMCE library (2.4.1 -> 2.6).

WYSIWYG editor upgraded from version 3.2.4.1 to 3.2.6.