On June 28, Microsoft announced new version CSOM (Client Side Object Model) for SharePoint Online and Project Online. We will get latest version of CSOM package for SharePoint Online from the NuGet gallery having search term or with an ID – “Microsoft.SharePointOnline.CSOM”.
The latest version of CSOM package is v16.1.7813.1200 as
Note: Here, only NuGet version is changed but assembly version remain same – 188.8.131.52
This NuGet package is only for SharePoint Online and can not use as it is for SharePoint on-premises environment.
SharePoint Online Management Shell (16.0.7521.1200) also updated for this CSOM release. We can download from here