Windows 10 Insider Preview is here today, but it’s a long way from done. We’re going to make it faster, better, more fun at parties...you get the idea.
Download and install the preview only if you
Want to try out software that’s still in development and like sharing your opinion about it.
Don’t mind lots of updates or a UI design that might change significantly over time.
Really know your way around a PC and feel comfortable troubleshooting problems, backing up data, formatting a hard drive,...