The software giant will announce the release february 29 in Barcelona, during the World Mobile Congress, aiming their new OS towards the mobile market, both phones and tablets.
Many people have tried this already and both screenshots and videos are readily available, showing a radical departure from the traditional layout first introduced in Windows 95, almost two decades ago.
Some sources state that the most noticeable change will be the removal of the ever present Start menu, but I wouldn't be surprised if it was an optional choice; many people like the way it works and are comfortable with what's familiar, so completely removing it would mean shooting oneself in the foot. Microsoft isn't famous for taking such high risks.
So will it suit computers, since it was designed for tablets? We'll have to wait for the 29th and try it ourselves.