esp additional boards manager json file(s)

Can 
http://arduino.esp8266.com/staging/package_esp8266com_index.json
be used just as well as
http://arduino.esp8266.com/stable/package_esp8266com_index.json
in the file>>preferences>>additional boards managers entry?

.../staging/... gives you an outdated version. If that's what you want then go ahead... :D