The Twilio helper library for ASP.NET has released version 7.0.0 in November 2022, which includes breaking changes and new features such as the ability to validate that HTTP requests originate from Twilio using the ValidateTwilioRequestFilter and middleware, improvements to the TwiMLResult constructor and class, and enhancements to the SmsRequest and VoiceRequest classes. The library also introduces new overloads for the TwiML methods, allows specifying formatting options for the TwiML response, and includes a new ToTwiMLResult() extension method. These changes aim to improve the integration of Twilio with ASP.NET and provide more flexibility in handling Twilio requests and responses.