That was announced. Maybe it finally happened. For Duplicati OneDrive, this means switch to OneDrive v2.
Migrating from Live SDK to Microsoft Graph
these APIs are now end of life and will no longer be available after November 1, 2018 .
To switch, I think (besides editing the job to change the Storage type dropdown from Microsoft OneDrive to Microsoft OneDrive v2) you probably have to get a new AuthID but you can certainly “Test connection” first.
Migrating “should” just be a dropdown change and probably a new AuthID. The Duplicati screen is the same. Between its Storage Type and AuthID is a Path on server (still). If there’s something more, please say where.
Setting up OneDrive (personal) gives some information. Link goes to a post to address questions/concerns, however lack of OneDrive v2 in a beta release (as opposed to canary or experimental) was fixed by 2.0.4.5.
The above How-To is possibly a better place to document any information generally useful to setting this up.