IOHK, the dev team of Cardano, officially announces that the Cardano protocol has been successfully changed to introduce the token locking mechanism, which is due to take effect on 16 December, at the boundary of epoch 236 at 21:54:44 UTC. As they elaborate, 'Allegra,' the codename of this protocol upgrade, will deliver token locking to the platform, and is also a core building block of both Voltaire governance and Goguen smart contract functionality.