Ezy will move solely to the south in 2015 when the baggage system has Ben upgraded and the terminal is finished. The only reason they are in 2 terminals just now is that the baggage system is not good enough to cope with all the flights, and the loss of 10 or so gates at the south from the old pier.
As for not bussing anymore, This is correct.....the aircraft will arrive at whatever terminal of the next flight and the mono rail connects both terminals so there is no need for bussing. The bussing airside tool much much longer that the new system of deplaning at the different terminal, By up to 45 mins quicker!!!!!