Manager of the Windows Phone Program, Joe Belfiore in NYC
Tonight we can confirm via two known sources that Windows Phone 8 has RTM’d. For those of you unfamiliar with the term, RTM stands for Release to Manufacturing (aka “going gold") and is one of the final steps in getting the software to market.
We're also told that this RTM date was planned and that Windows Phone 8 is "on time".
Windows Phone 8 codenamed ‘Apollo’ has been in development since 2011. The previous major branch of Windows Phone codenamed ‘Mango’ RTM’d in July 26th, just over one year ago. Bringing along a new core architecture built upon the NT kernel, the Windows Phone 8 OS will allow Microsoft to adopt cutting edge technology and heavily compete with Android and iOS in terms of features and hardware flexibility.