I think DropBox wants to improve its ecosystem: The more and the better apps/3rd parties are integrating DropBox the more reasons people have to use DropBox.
The Datastorage API makes Dropbox a "copy" of iCloud: You can sync stuff between devices. This was possible since the beginning of Dropbox but it was a lot of work for developers. Syncing is not an easy problem to solve.
Comments
I think DropBox wants to improve its ecosystem: The more and the better apps/3rd parties are integrating DropBox the more reasons people have to use DropBox.
The Datastorage API makes Dropbox a "copy" of iCloud: You can sync stuff between devices. This was possible since the beginning of Dropbox but it was a lot of work for developers. Syncing is not an easy problem to solve.