Windows Phone “Mango” aka Windows Phone 7.5 has been Released to Manufacturing (RTM) which means we are going to get it soon (I am guessing September/October 2011)! The RTM build of Mango is 7720

I wanted to drop into the Windows Phone Blog briefly to update you on an important milestone. Earlier this morning, the Windows Phone development team officially signed off on the release to manufacturing (RTM) build of “Mango” – the latest version of the Windows Phone operating system. This marks the point in the development process where we hand code to our handset and mobile operator partners to optimize Mango for their specific phone and network configurations. Here on the Windows Phone team, we now turn to preparing for the update process. The Mango update for current Windows Phone handsets will be ready this fall, and of course will come pre-installed on new Windows Phones.

Source: Windows Phone “Mango” – Released to Manufacturing

Got this off my mailbox from Windows newsletter, Windows 7 has finally RTMed and it should hit our shelves on 22nd October 2009.

Announcing: Release to Manufacturing
It’s almost here! We’re very happy to tell you that we’ve hit the last big milestone on the way to Windows 7: Release to Manufacturing. We’re packaging copies and manufacturers are putting it on new PCs. On October 22, you’ll be able to get the final shipping product. Pat yourself on the back for a job well done; you helped make this an operating system we’re all going to enjoy.

The Windows 7 RC will be available for download until 20th August 2009. After that, you won’t be able to get the download, but if you have the software, you can still install the RC and get a key if you need one. The keys will be available till March 2010.