When will Win10 be listed?

Microsoft made a big joke. Ok, since it has won, let's see when Windows 10 will be available.

The official version of Windows 10 will be released in the middle and late 2015 and will be officially released later in 2015. However, computer players and geeks who love tossing do not need to wait for such a long time, you can download the Win10 technology preview version tomorrow, the preview version is mainly for developers, the problem is inevitable, if you do not have enough experience or system stability requirements Very high, still don't rush to upgrade.
Win10 rediscovered the start menu, using a novel task switching method, and supports multiple desktop operations.