The browser, codenamed Spartan, will be shown off on January 21 when Microsoft demonstrates its new Windows 10 operating system.

Microsoft is gearing up for further consumer demonstration of Windows 10; an operating system that promises to banish all of the things that people hated about Windows 8 on January 21 next year.

Microsoft is set to host a large-scale event scheduled on January 21 and it is set to cover not just PCs and notebooks, but also how Windows 10 will improve the way smartphones, tablets and the Xbox One work.

Developers have already had a taste of Windows 10's capabilities and the most interesting and innovative new feature is something called Continuum.

It's a smart user interface that will automatically change based on what the user is doing. So, if the device is being used like a desktop computer -- keyboard and mouse -- it has the classic Windows feel, but lay a finger on the touch screen or, if it's a 2-in-1 device, remove the display from the keyboard, and everything instantly switches into a touchscreen input mode.

Windows 10 is also going to work across the whole ecosystem of Microsoft devices. The January event will be the clearest indication yet of how easy it will be to share documents or tasks across PCs and mobile devices.