Twilio has introduced Templates for TwiML Bins, which allow developers to customize their TwiML documents with placeholders for HTTP parameters passed by Twilio's webhook request. This enables the creation of more complex applications, such as SMS forwarding, where developers can reference variables like `{{From}}` and `{{Body}}`. The new feature is designed to make it easier for developers to focus on building experiences without managing web infrastructure, and provides a way to pass custom HTTP parameters by appending them to the query string in the URL. With templates, developers can now create more dynamic TwiML Bin applications that can be easily customized at runtime.