Microsoft announced today that developers who want to build apps for Office 365 and Office 2013 will now have a host of new tools to do so. Via Microsoft’s VS blog the team announced the availability of the Microsoft Office Developer Tools for Visual Studio 2012. The final version of the new toolset includes several key improvements not seen in the preview version such as a new validation practice so now developers can find and fix common errors in their Office apps before submitting them to the Office Store. In addition, MSDN subscribers for Visual Studio Premium and Ultimate will receive a complimentary, one-time, 12 month Office 365 Developer Subscription aimed at assisting them in getting their apps into the Office Store. Read more here.