There are release notes at: https://docops.ca.com/ca-ppm/15-2/en/release-information/release-notes-on-premise#ReleaseNotes(OnPremise)-ppmnewforResourceManagement
Or, should be able to get a PPT slide deck from your account manager.
While speaking with your account manager, ask about 15.3 PPT info. If you are not on 15.2, yet, thinking about upgrading from 14.2 – skip 15.2 – there’s just not enough there to justify the upgrade to 15.2 when 15.3 is there to grab.
DocOps 15.3 release notes includes a table comparing 14.4, 15.1, 15.2, 15.3: https://docops.ca.com/ca-ppm/15-3/en/release-information#ReleaseInformation-New!ReleaseComparison
Resource Management got a lift in 15.2, it was a pretty small lift – a cool promise of things to come, but not enough. 15.3 delivers a lot more. Your account manager should have a PPT package that goes into 15.3 quite deeply, a visuals will be better than text from DocOps release notes. I don’t expect these PPT packages to appear where they can be Googled.
Dale