We are happy to announce availability of new SharePoint Client Side Object Model (CSOM) version targeted for the Office 365 or more specifically for SharePoint and Project Online. This release again contains few updates on the existing SharePoint CSOM assemblies and some maintenance changes. Probably most interesting included capability is the DeclareItemAsRecordWithDeclarationDate() for records creation. This is targeted for the migration scenarios where you'd need to re-assign record declaration date for migrated item based on its original value in source system.
More details from following blog post at dev.office.com: