On stage at MWC in Barcelona, Stephen Elop mentioned that there are now more than 2.8 million users signed-up for the Windows Insiders program.
The Insiders program was launched for test-driving Windows 10 for both desktops and phones and it allows the Windows team to receive a lot of feedback and make sure that the OS they're working on is what the users want.
With a plethora of new features like Cortana, Spartan, and an update to the user interface, Windows 10 is shaping up to be a blend of Windows 7 functionality sprinkled with Windows 8's modern elements. The result is an OS that bridges the gap between traditional desktop computing and modern touch environments without sacrificing the familiarity of Windows.
Back in January, when the company held a big Windows 10 event, it announced that at that point there were only 1.7 million Insiders, meaning that the program grew a whole lot in just a month. It also appears that most users are in it for the desktop OS, with only 60,000 users having installed Windows 10 on their phones.