There, the term "final release" more deceptive than when applied to software. Microsoft Office 2013 is no exception, and constant updates released through Windows Update for those who receive them.
From time to time, these updates are bundled with others in a comprehensive package that has been released as a service pack. This service pack also includes the new update, and start SP1 for Office 2013 in several performance, stability, and security is set for the updates that were released before February 26 2014.
For a complete list of specific changes in SP1 and enhancements, see the Microsoft Knowledge Base.
If you saved the Office 2013 Update through Windows Update, you can upgrade to SP1 from Windows Update-open to select manually the update. Note that the download is less due to the fact that a previous update was already being applied to your system.
This stand-alone Installer is recommended for those who do not manage Office 2013 Update through Windows Update, or for those who intend to reinstall Windows. This is a 32-bit version to a 32-bit version of Microsoft Office. 64-bit creates separate available for those running the 64-bit version of Microsoft Office.
Specification: Microsoft Office 2013 Service Pack 1 (32-bit):
Platforms: Windows 7 (32 bit),Windows 7 (64 bit),Windows 8,Windows Server
Date Added: Feb 26, 2014