Opera 10.0 Alpha 1 With New Rendering Engine, Opera Presto 2.2

Opera Software today introduces the first look at Opera 10. An alpha version of Opera 10 is now available at http://www.opera.com/browser/next/.

This release gives people a taste of Opera’s new rendering engine, Opera Presto 2.2 — the foundation of all future Opera 10 products. Opera Presto 2.2 offers approximately a 30-percent-faster browsing experience as compared to Opera Presto 2.1, introduced in Opera 9.5 in June 2008.

Opera has fine-tuned its standards support and, as a result, Opera 10 alpha achieves an Acid3 100/100 Test score. This version also provides Web developers with a whole range of new technologies for building better Web sites.

Here's a quick list of what's new:

• Presto 2.2 Engine
• Performance boost
• 100/100 and pixel-perfect on the Acid3 test
• Auto-update
• Inline spelling checker
• Opera Mail improvements, including rich text composition and delete after X days
• Widget Improvements on Linux

Presto 2.2 Engine

Opera 10.0 Alpha 1 includes Presto 2.2 (Kestrel includes Presto 2.1.1), an updated version of Opera's Core. Presto 2.2 features numerous new features and loads of bug fixes, such as:

• 100/100 and pixel-perfect on the Acid3 test
• New regular expression engine, which greatly improves performance
• Improved CSS performance
• Pretty-printing of unstyled XML
• Web font support
• RGBA and HSLA support
• Selectors API support

Check more details about what’s new here and here.