Opera has announced that they are developing a new JavaScript engine for their web browser that will be significantly faster than the current version. The new version is being designed to achieve maximum execution speed, while previous engine was designed to minimize code footprint and memory usage. To accomplish the goal the new engine will include native code generation, registered-based bytecode, and automatic object identification. Native code generation removes the significant overhead that bytecode execution creates. Firefox, Safari, and Chrome’s latest JavaScript engines also include native code generation. According to Opera, the new engine “is currently about two and a half times faster at the SunSpider benchmark than the ECMAScript engine in Presto 2.2 (Opera 10 Alpha)”without using native code generation. When using native code generation, which is “not yet ready for full-scale testing”, it runs “between 5 and 50 times faster” in compatible benchmark tests. No details were given as to when the new engine will be added to the Opera web browser.