The world of trademarks is an interesting one. Companies frequently trademark words and phrases that relate to products they have either released or intend to release, but the application for a trademark could equally mean nothing. Throughout December Microsoft has filed for a number of trademarks centering around the word 'mod'. Could this be a reference to modern apps? We don’t know yet, but it's certainly possible.
Since the beginning of the month, Microsoft has filed the Mod, Microsoft Mod, Windows Mod and Microsoft Office Mod trademarks. There are listings for these trademarks on the US Patent and Trademark Office website but very little is given away.
It is clearly something software-related, but it is difficult to get more than this from the information given. According to the listings, the trademarks relate to "Computer operating system software; computer software; computer hardware; computer peripherals; computer accessories; mobile computing devices; mobile communication devices". So that clears that up!
More recently, there has been another filing for the Throne Together trademark. This is listed as relating to "Game software", so it is likely to be an upcoming Xbox One title -- perhaps a Game of Thrones tie-in?
There has been no official announcement from Microsoft yet, but as soon as we hear anything, we'll let you know!