I wrote about Windows 10 before. Windows 10 is out now. Microsoft said that currently Windows 10 is running on 75 million PCs. They have a target to reach 1 billion PCs in one year. We will wait and see the future of Windows 10. Currently the user feedback of Windows 10 is good. If you are a genuine user of Windows 7 or Windows 8.1, you can free upgrade to Windows 10 within one year of its release date.
Do you upgrade to Windows 10? Do you like it or hate it? Please give comments.
One other point, Windows 10 mobile is coming and we can expect it later in this year.