Microsoft has taken the opportunity to announce that the development phase of Office 2013 is complete and the engineering teams involved have signed off the Release to Manufacturing (RTM) build of the suite. Now that the coding, design and development phases of the process are complete; the main focus of the Redmond company is to now concentrate on releasing the new build of Office to consumer and business customers via selected channels.

According to multiple publications, Microsoft has internally signed off Windows Phone 8 as “code complete” or, in more formal terms, released to manufacturing (RTM). Check out the details after the jump.

With just days left ahead of Microsoft’s promised release window for Windows 8 RTM*, the company is going through the very final steps of the software development cycle – involving things like checks and verifications. We’ve received news from TheVerge that the final build of Windows 8 will be 9200.16384.WIN8_RTM.120725-1247 (or just 9200) and not 8888 as it was previously being reported. TheVerge cites their own sources as well as Win8China for the story.