Windows 10 is now available worldwide, and thanks to the help and hard work of the Insiders who are already participating in the Windows Insider Program, it's the best Windows ever. Now, you can continue to help us make it even better.

Join the Windows Insider Program and you'll be able to opt-in to receive preview builds and give us feedback on our latest work. You'll also get access to the Windows 10 Mobile Insider Preview to help us fine tune it for launch.