Release-Notes.md

@@ -15,9 +15,7 @@ OSDU R3 Milestone 7 is released on Aug 13, 2021 (tentative). For detailed servic
   * [Multi-thread Optimization](https://community.opengroup.org/osdu/platform/data-flow/ingestion/csv-parser/csv-parser/-/issues/26) Every record being read and added as a task to an executor service, where it is enriched and stored with other records Parallelly.
   * [ID Generation Standard](https://community.opengroup.org/osdu/platform/data-flow/ingestion/csv-parser/csv-parser/-/issues/25) ID is being generated based on OSDU standard now ( `<authority/data-partition-id>:<source>:<entity-type>:<base64-of-xosdu-natural-keys>`).
   * [Relationship Enhancement](https://community.opengroup.org/osdu/platform/data-flow/ingestion/csv-parser/csv-parser/-/issues/24) In the file metadata record, the `EhxtensionProperties` block now can be used to offer extra details for ingestion and to provide relationship(Schema/Data) information.
-* `Data Definitions and Services` Key Changes and Enhancements ([See All](https://community.opengroup.org/osdu/data/data-definitions/-/blob/master/E-R/ChangeReport.md)) :
-  * _TBD_
-* `System` A revised WellLog version is bootstrapped. [More Details](https://community.opengroup.org/osdu/platform/system/schema-service/-/issues/47) _\[TBD\]_
+* `Data Definitions and Services` To accommodate Wellbore DDMS, a data model for Activity was added, as well as improvements to WellLog and WellboreTrajectory. Take a glance at the exhaustive list of modifications on its [snapshot](https://community.opengroup.org/osdu/data/data-definitions/-/blob/master/E-R/ChangeReport.md#snapshot-2021-04-29).
 
 ## Bug Fixes