Of course, Agent and Viewer for Mac are already in development. The release of Agent/Host for Mac will follow the Viewer for Mac which we hope to release by the end of the year. Unfortunately, we cannot provide any specific ETA yet.
As for the Host/Agent for Mac/Linux - we plan to release it this year, but, unfortunately, we cannot provide a more specific ETA on it yet. Hopefully, we will be able to release the first beta in a few months. However, we will make sure to notify all our users when Host/Agent for Mac/Linux is released. Sorry to keep you waiting.