Apple has released Safari 5.2 Update 3 to developers for testing purposes. This follows the release of OS X 10.8 Mountain Lion Developer Preview 3 and Xcode 4.4 build 45155i earlier today.

We’ve been informed that this build includes a couple of new features for developers including scalable vector graphics filters and a redesigned web inspector.

SVG Filters

Using SVG Filters, you can combine several filter primitive elements and light source elements into a single sophisticated filter, which can then be applied to any SVG element.

Redesigned Web Inspector

The Web Inspector has a streamlined new design that speeds up common development tasks. It features a new all new iconography, a navigation bar that lets you easily switch between different web page elements, a persistent JavaScript console, integrated timelines, and more. Additionally, JavaScript debugging is now enabled by default, and the page source view now opens in the Web Inspector automatically.

Developers can download the new release from the Apple Developer Center.