This release contains few enhancements, performance fix for batch & IDD and other bug fixes.

1. DataSecurity Enhancement features for IDD.
2. Localization for Russian Language for IDD.
3. Performance fixes in IDD for Hierarchy View, Merge in IDD.
4. Enhancement for Delete All relationship in Hierarchy Manager Explorer View.
5. Performance fixes for Automerge and Match Batch jobs.
6. Several bug fixes in IDD and Hub.

Informatica MDM Multidomain Edition - 9.7.1 HotFix 1 - Release Notes - (English)

PAM for Informatica MDM Multidomain Edition Release 9.7.1 Hotfix 1

You can find the Hotfix links here.