Currently, OneDrive provides version history for Office files only. This allows users to restore old parts of a possibly corrupted or accidentally edited document or file.
But in the not-too-distant future, this feature will also work on other types of files, like PDFs, CAD files, photos, and videos. This means users will be able to restore or download a good copy of their files for 30 days.
Sorry to put a quick end to that feel-good moment, but the OneDrive news isn't all positive today.
Shahine did note on Twitter today that Microsoft does have differential sync for Office files currently. Differential sync is the ability to sync only the parts of files that had changed, not entire files.