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Apple has announced the release of Safari 5.1 Developer Preview. It is available only for the developers. According to Apple, Safari 5.1 Developer Preview will allow developers to tap into new extension APIs, including new event classes, support for popovers and interaction with Reader. Safari 5.1 Developer Preview comes with support for full-screen webpages, better graphics acceleration on Windows, and media caching with the HTML5 application cache.

You can now download Safari 5.1 Developer Preview and take advantage of new technologies, including support for full-screen webpages, media caching with the HTML5 application cache, and better graphics acceleration on Windows.

With Safari 5.1 Developer Preview, you can tap into new extension APIs, including support for popovers, menus, new event classes, and interaction with Reader.

Download Safari 5.1 for iOS, Mac OS X, and Windows Free from Apple Developer
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