I am still never use metatrader5 or the other platform on my trading only Agree we as trader didn't much familiar with MT5 and much broker still use MT4 so I am not sure if metaquotes would release MT6 only But mostly trader like trade with mt4 because it is easy in use and it support to all kind of indicators and templates let alone I also a big difference between MT4 and MT5 till because many informartin and tutorial from any master forex what using metatrder platform