Look at VEX Coding Studio fairly near the bottom here:
If you’re asking if the old RobotC will work unchanged with V5, I don’t know.
If you want to use python to code a robot try robot mesh studio. I doubt they will change it JS though, that’s much more web based then mechanical. If anything, I imagine they would change it to Java but even this is unlikely. As for robotC not working, I don’t think they will stop supporting it since they said they will be supporting 3rd party IDE developers (yes technically robotC is developed by Carnagie Melon not VEX) but I would be learning PROS just in case.
Every indication I have seen is that RobotC will NOT be compatible with V5.