The Twilio Client iOS and Android SDKs have been updated with performance improvements, enabling users to make calls over cellular data networks or WiFi connections without using standard cell phone minutes. The latest versions of the SDKs are available for download, allowing developers to integrate them into their apps with minimal changes required. Support for ARMv7s with the iPhone 5 is coming soon in an updated SDK. Twilio provides documentation, sample code, and a support team to help developers get started and troubleshoot any issues.