Microsoft is working hard on Windows 8 as well as the upcoming Microsoft Office 15. Office 15 is not Office 2015, but Office version 15. Office 15 is expected to hit the market in 2012, making its name a constant source of confusion. Office 15 is pretty much the same to the current Microsoft Office 2010 but it has significant addition, “Moorea” which is built for tablet devices.
Because Microsoft Office 15 is currently under development we can expect leaks in the coming months and the most recent one is Microsoft Office 15 build 15.0.2703.1000 which is now leaked on internet. This specific build of Office 15 is 912.77 MB in size.