We’re pleased to announce the latest update for the Project Service Automation application for Dynamics 365. This release includes improvements to quality, performance, and usability, and is based on your feedback and requests. 

https://blogs.msdn.microsoft.com/crm/2019/03/12/release-notes-for-project-service-automation-update-release-5/

This release is compatible with Dynamics 365 9.x. To update to this release, visit the Admin Center for Dynamics 365 online, solutions page to install the update. For details, refer How to Install, Update a Preferred Solution.