We can see process details in the Automation Studio report (Offline Audit Report), but can't see the release details in the Release Operation Center(ROC)
Release : 6.4, 6.5, 6.6 or higher
Component : CA RELEASE AUTOMATION RELEASE OPERATIONS CENTER
The reports referred in ASAP offline reports are not showing release-report rather they show process reports.
The complete list of old releases are not visible under deployment section because the page size is capped to show first 50 but if you scroll further the page-index will change and you should be able to see new release details loading.
Deployment reports API: reports/releasesReportsPage?advanced=APP_ID~4&filter=&orderBy=START_TIME-false&pageSize=50&pageStart=0&reportType=ALL
The equivalent feature in ROC for same is at Dashboard i.e. by adding either of two reports
example: Adding deployment overview
Also in the deployment page if you key in the release name in search filter it will be able to get the release for you under deployment.