There is no new user documentation published for this HFR. To view the documentation for previous HFRs on 15.3 FP7 see:

https://verintconnect.com/Authoring/EIS/Technical/Assets/151%20Documents/15.3-FP7/release-pack/Content/Hot_Fix_Rollup_Functionality_Changes.htm

To view documentation on installing HFRs see:

http://em-docs.verint.com/15_3/em-install-docs/Content/Installing_EM/Upgrading_EM.htm