Microsoft will begin pushing the Windows Phone 7.5 "Mango" mobile operating system update to existing customers "in the next week or two," according to a September 21 post on the Windows Phone blog.
Windows Phone General Manager, Customer Experience Engineering Eric Hautala said:
"During the official Windows Phone 7.5 update process, every Windows Phone will also receive software from the handset manufacturer. This matched and paired firmware has been painstakingly tuned so your phone--and apps--work with all the new features of Windows Phone 7.5. Since your phone requires the proper firmware to function as designed, my advice is simple: steer clear of bootleg updates and homebrew tools."
Microsoft recently released new versions of the Windows Phone 7 Connector for Mac users, as well as an update to the Zune software client (version 4.8) for Windows PCs, which are necessary for updating you phones to Mango. If you haven't already, you must install it. "When you update to Zune 4.8, you'll be asked to participate in improving the update process."
Mango includes an HTML5-compliant IE 9 Mobile browser; third-party application multitasking; Twitter integration; and Windows Live Messenger integration, new Bing search capabilities and other new features.