in Maestro datasheet I read it can connect directly to FlexRigs. I am wondering if this capability will be inside Maestro firmware or if this capability will be included in next FlexRig's firmware releases.
This connectivity is a function of the operating system running on the device to enable a link-local IP address to provide IP communication between the radio and Maestro. It works exactly like a PC running SmartSDR for Windows. No special firmware is required.