When will Windows10 be upgraded?

First of all, you can tell the landlord that Microsoft's Windows 10 will not be free. Although Apple's OS X has been free for more than two years, Microsoft will not adopt the same marketing strategy for Windows. Microsoft officially said that Windows 10 is not a Microsoft promotional item, but the company is indeed considering different ways of profiting, such as through additional services and content. For Microsoft, which is now in transition, Windows is still a very important profitable business. Free distribution will directly affect Microsoft's revenue. After all, Microsoft is different from Apple, which has higher hardware profits. Finally, the time to market for Windows 10 is now basically fixed. Microsoft will open a new public preview in early spring 2015. The official version should be officially released in October 2015.