The old logo is probably quite familiar to anyone who has used a computer in the last 25 years. No, that’s not an exaggeration, it’s how long the old logo had been in use.
The new logo is similar to that of Windows 8, except it retains the colors and isn’t tilted. The font used in the logo is Segoe – the same font used in Windows 8, Windows Phone, Outlook.com and other Microsoft-made UIs.