Which version of TLS was released in August 2018?

The version of TLS that was released in August 2018 is TLS v1.3. This version was introduced to improve upon its predecessors by enhancing security and reducing latency for secure communication over the internet. TLS v1.3 introduces several optimizations, such as a streamlined handshake process and the removal of outdated cryptographic algorithms, which contribute to improved performance and security.

The specifications of TLS v1.3 were finalized by the Internet Engineering Task Force (IETF) and have since become widely adopted in various applications to ensure secure data transmission. In contrast, the other versions mentioned were either released much earlier or do not exist, making TLS v1.3 the definitive answer for this question.