On January 3,2013, the project released version 4.0 of their fully libre SDK, partly in response to concerns over Google updating the license for add-ons and binaries under a proprietary agreement.
On January 3,2013, the project released Replicant SDK 4.0 as a fully libre replacement to Android SDK. This was also partly to concerns over Google updating the license for add-ons and binaries under a proprietary agreement.