The Datastore API was created to support syncing of structured (nonfile) data.

With the v2 release, Dropbox will offer more syncing features, and a single solution to meet syncing needs should simplify development. Additionally, developers were forced to make trade-offs from a functionality standpoint when making the Core/Sync decision. Developers found themselves choosing Core when they should have chosen Sync (and vice versa). However, in reality, the Sync API and SDK caused confusion. The Sync API was originally released to ease file syncing with Dropbox. Datastore bug fixes will end in six months however, Datastore endpoints will only remain available through April 2016. Since the Core API powers the Sync SDK, existing apps utilizing Sync will continue to work however, bug fixes will cease. Dropbox will continue to support both APIs and implement bug fixes through Oct. While all new Dropbox apps should use the Core API, existing apps that utilize the Sync and Datastore APIs have some time to make the transition. As part of its effort to simplify the experience and move developers to the Core API, Dropbox has also announced the deprecation of the Sync and Datastore APIs.

The goal of the release is to simplify the developer experience. Dropbox recently announced the upcoming release of the Dropbox API version 2.

Dropbox api v2