You don't need to download the separate updates listed in the KB articles. Click-to-Run updates include all the fixes listed in the KB articles.

If you do not want to receive automatic updates via Windows Update, interested users can download two 32-bit versions here, or 64 bit here.The KB articles listed below are for reference purposes only. Office RT users on Windows RT will also receive the update starting today (February 25).

Microsoft also said that Office 2013 SP1 will include all the public updates and cumulative updates it has released between the time when Office 2013 launched so far. Pro has been converted into OneDrive for Business. Meanwhile, cloud storage service is built into SkyDrive. Some other changes focus on improving Click-to-Run virtualization technology to install and update computer applications for Office 365. The new application will also help develop some hidden features and APIs for developers, and add some features like Power Map for Excel in Office 365 ProPlus, a visual 3D tool to be able to mapping, exploring interacting with geographic data in Excel.

The new update will be compatible with Windows 8.1 and Internet Explorer 11, better supported for modern hardware such as high-resolution screens and high-precision touchpads.

This is the first update for Office 2013 office application since it was officially released on January 29, 2013, and Microsoft said users can receive a message to download the SP1 package through Windows. Microsoft has quietly released a SP1 update for Office 2013 users to improve security, performance, and stability as well as merge with previous updates.

Office 2013 service pack 3