The whole A and D Series is going to upgrade to pro versions. The pro versions will have internal power supply, relatively larger chassis, less compromises overall and higher price. E and L series are for best performance to price ratio, small chassis, external supply.There was an A30. It's a big improvement, of it.
For A70, it's not going to happen probably ever. If A70 were to exist it would be as large as D70/D70s which is impractical. A30pro has pairing D30pro that's larger than original A30/D30 but smaller than A90/D90.
As A50s just released, it's impractical to release pro version upgrade. It just doesn't make sense. So the product only fits in A30pro. There can be upgrade to A50s in the future but no plan yet.
There will be updates in the L series and E series line up next year. But won't happen too soon.
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