This servicepack is applicable for upgrade of the following TIA Portal products: WinCC Basic / Comfort / Advanced / Professional V14. Besides providing a series of improvements, the service pack supports installation on Microsoft Windows 10 (March 2017)
As a registered customer, you can download the trial version for SIMATIC WinCC Basic/Comfort/Advanced/ Professional V14 SP1 and test it for 21 days. 
New features and changes compared to earlier versions are described in the delivery release for WinCC V14 SP1 109745460