Windows 10 is coming sooner than expected, and without Internet Explorer. With new features the fact that the upgrade will be free for existing Windows users is very good news indeed. At Build 2015, Microsoft has revealed more details so here’s everything you need to know about the Windows 10 UK release date, price and new features. Updated on 20/5/15. See also:Microsoft’s January 21 Windows 10 event live stream and live blog.

Update: Build 10122 of the Windows 10 Insider Preview is now available for the Fast ring but users with an AMD GPU will find frequent crashed in Microsoft Edge (still called Project Spartan for now). It includes improvements to both Start and Continuum. There’s also a redesigned Insider Hub, changes to the way Windows 10 handles default apps and improvements to the Edge browser.

“I think you’ll see that this build is a bit more stable and polished than the last one, which is to be expected as we begin to stabilize for the public release this summer. From here on out you’ll see fewer big feature changes from build to build, and more tuning, tweaking, stabilizing, and polishing,” said in a blog post where you can find out more details of the above additions in Build 10122.

Windows 8 has not been a universal success. In many ways a necessary step not well executed, Windows 8’s attempt to stitch together desktop and mobile has been way too radical to encourage new users. And as the longer life of existing PCs and laptops combines with the growth of smartphones and tablets to continually slow PC sales, Window 8 has come to be seen as a dud. See also: Windows 10 review and Windows 10 for phones preview.

This means two things: a new and improved Windows in the fastest possible time and – oddly – a jump in numerals to Window 10.

Windows 10 will include phones and the Xbox One- in an app form. It will also include Cortana and a new web browser currently known as ‘Spartan’. Spartan spells the end for Internet Explorer, although it may not completely disappear for a little while yet, according to the IEBlog at MSDN. At Build 2015, Microsoft confirmed it will be called ‘Edge’ and it will be able to use Fireffox and Chrome extensions.