Link tokens and Link event logs are being released by Plaid to improve the infrastructure and security of their ecosystem. These updates aim to provide a more secure way to integrate with Plaid, allowing developers to initialize Link with a new token instead of using a static public_key. The new token endpoint will also be used for certain Link configurations, such as 'products' and 'language'. Additionally, new event logs are being launched in the Dashboard, making it easier for developers to view Link events. All new Plaid implementations will automatically benefit from Link tokens, and existing developers are encouraged to upgrade now in preparation for future updates built on this new technology.