There are several cool new features added on this time around, including:

• Code Folding
• Subversion Integration
• Web Services Support
• Embedded IE
• and much, much more...

From their press release:

Zend Technologies, Inc., the PHP company, today announced Zend Studio 5. The product is a full Life Cycle development solution that allows developers to easily and more effectively create, test, and deploy their PHP applications across the enterprise.

Available in three editions; Standard, Professional, and Enterprise, Zend Studio 5 includes support for PHP 5 as well as an easy switching mechanism allowing users to move between PHP 4 and PHP 5 for full application development, and also seamlessly integrates with Zend Platform 2 to provide a complete development and deployment solution for business-critical, PHP-based applications.

So, if you're already a Zend Studio user, head over and check out the new features - or, if you're still looking for that editor that fits "just right" give this one a shot...