The official "Windows Phone Blog" yesterday had an updated post, saying that the "Mango" update, or Windows Phone 7.5 OS update will be rolled out for Windows Phone 7 mobile phones in two weeks. The blog post by Eric Hautala, Microsoft's General Manager of Customer Experience Engineering, comes after a fair bit of speculation online about the release date for the updated OS.

After the WP7.5 update starts being sent out, the Where's My Phone Update? table will be refreshed to reflect the worldwide rollout status.
Saying that Microsoft and partner companies had been working upon the update for months, he cautioned prospective ROM copiers who don't want to wait, against installing unofficial or leaked copies of Windows Phone software.
Eric Hautala explained in the post that, "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."
Signing off, he said "I know you're eager to get your hands on the next release of Windows Phone - and everyone involved with Windows Phone is equally excited and eager to deliver it to you. Please hang on - we're almost there."
If you own a WP7 phone, updating it would require software on your computer. Download either the newer Windows Phone 7 Connector (for Mac OS) or the Zune software for Windows-based PCs.
What Windows Phone 7 "Mango" Will Bring
Microsoft's Windows Phone 7.5 "Mango" update is said to include over 500 new features - including built in multitasking, Windows Live Messenger and Twitter support. The Start screen will now let users create personalized live tiles for their friends or groups. The updated People Hub provides a single interface for Facebook, LinkedIn, Outlook, Twitter, and Windows Live Messenger updates, saving users from having to switch between apps.
Mango has tighter integration with SkyDrive, Microsoft's cloud storage service. For instance, Office users now can access SkyDrive via the Office hub, and can pin Office documents to the Start screen--a feature reminiscent of the Windows desktop. Other Mango enhancements include browser support for HTML 5 and hardware-accelerated graphics, as well as YouTube, LastFM, and Slacker integration with Windows Phone's Music + Videos hub.