IE10 Release Preview added support for:
Internet Explorer 10 was not just a piece of software; it was the tip of the spear for this strategy. Unlike previous versions that were tweaked iterations of legacy code, IE10 was rebuilt to handle the touch-centric, app-like web experiences that users were beginning to expect. The Release Preview, launched in June 2012, was Microsoft’s way of letting developers and power users kick the tires before the grand opening of the Windows 8 launch in October. Internet Explorer 10 Release Preview
To understand the importance of the IE10 Release Preview, one must understand the environment in which it was born. The year was 2012. The "Post-PC era" was the buzzword of the day. Smartphones and tablets were devouring traditional PC sales, and Microsoft’s answer was Windows 8—an operating system designed to span both desktops and tablets using the new "Metro" (later renamed "Modern") design language. IE10 Release Preview added support for: Internet Explorer
The Release Preview was the first time developers could stress-test both versions side-by-side. To understand the importance of the IE10 Release
IE10 significantly expanded support for modern web standards, including CSS3 multi-column layouts, grid layouts, flexible box (flexbox) layouts, and 3D transformations.
The IE10 Release Preview wasn’t just a bug-fix rollup. It introduced several headline-grabbing features:
In the controlled labs of June 2012, the IE10 Release Preview posted impressive numbers: