v1.9.2 is a maintenance release:

• Bundles librdkafka v1.9.2.
• Example for using go clients with AWS lambda (@jliunyu, #823).
• OAUTHBEARER unsecured producer, consumer and OIDC examples.

confluent-kafka-go is based on librdkafka v1.9.2, see the librdkafka release notes for a complete list of changes, enhancements, fixes and upgrade considerations.