IEC 62304 is an international standard for medical device software, specifically covering the lifecycle requirements for the development, deployment, and maintenance of software used in medical devices. The latest version of this standard is crucial for ensuring compliance and safety in the rapidly evolving field of medical technology.

As of my last update, the latest version of IEC 62304 is the second edition, published in 2006, with an amendment in 2019 (IEC 62304:2006/Amd 1:2019). However, standards evolve, and it's possible that an updated version has been released or is forthcoming. For the most current information, I recommend checking the official International Electrotechnical Commission (IEC) website or other authoritative sources.