It’s been six months since Microsoft launched Office 365, its subscription-based version of Office for businesses and consumers. Over 2 million consumers now subscribe to Office 365 Home Premium (the Office 365 “family pack” with five licenses) and 60 percent of Fortune 500 companies are using it in some form. This, Microsoft says, makes it the company’s faster growing business in the history of Microsoft. Since its launch, the team has added about 100 new features to the Office apps and today, it’s adding three more – one for business users and two for consumers. The most interesting one – and the only one that even non-Office 365 users will get to enjoy – is the addition of real-time co-authoring to the Office Web Apps. Those are the apps that allow you to edit Word, Excel and PowerPoint presentations in SkyDrive, and while their feature set easily rivals that of other online office suites, it was missing effective collaboration tools until now.