Today at the SharePoint Conference in Las Vegas, we shared significant updates to these tools, with a range of improved support to make building new Office 2013, Office 365, SharePoint 2013, and SharePoint Online in Office 365 more flexible and productive.
Over the last few months we’ve been making continuous updates to “Napa”, a lightweight, in-browser companion to the full Visual Studio rich client. These updates have included support for publishing apps to SharePoint, for sharing a project with a friend or with the community, lots of editor improvements, and much more. As you don’t need to install anything onto your machine in order to build apps with “Napa”, it’s the fastest way to get started with Office and SharePoint development. You can do so today at http://dev.office.com.
See the complete blog post at http://blogs.msdn.com/b/somasegar/archive/2012/11/12/building-apps-for-office-and-sharepoint.aspx by Microsoft Vice President S. Somasegar.