(Source: Jon Hudson, SDRplay)
API 2.10 has been released. We recommend you update your system to this latest version. We are constantly improving our software and updating to the latest version will allow us to provide you with the best possible support.
Users can simply go to our Downloads page on: http://www.sdrplay.com/downloads/ and download their choice of software again if they use SDRuno, HDSDR or the EXTIO plugin) to automatically pick up the the latest API. Alternatively you can just download the SDRplay API and replace your older copy wherever it sits in your system for these and other programmes.