Microsoft finalizes Windows Phone 8 OS, say sources

Chalk up another one for those Windows Phone tipsters.
Back in July, I heard whispers that Microsoft would release to manufacturing (RTM) the Windows Phone 8 operating system in September. The plan, as of then, was that the first Windows Phone 8 devices would ship in November 2012.
On September 14, Microsoft’s phone team shipped the OS, codenamed “Apollo,” according to a couple of my contacts. WPCentral is reporting they are hearing the same. And WMPoweruser has posted pictures via LiveSino.net of what appear to be Windows Phone team members signing an RTM wall.
I asked a Microsoft Windows…

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