Before now you could use software to load samples, but organising / renaming / deleting them had to be done direct from the DT, which was really fiddly & annoying (e.g. you couldn’t delete a folder until every individual sample in it had been deleted one-by-one).
Elektron said Overbridge would include sample management / librarian functions, so I assume there may be some duplication, but this is lightweight, simple and exists now rather than in Feb / some later date.