bmi

name of premium economy
The incredibly inventive 'premium economy' (formerly known as 'the new economy').

a/c type
A330

plain economy also exists on same a/c?
Yup.

seat improvements over economy (pitch, width, recline)
38" pitch vs 32".

food & drink improvements over economy
Dedicated service, so it's faster, but the content remains the same.

IFE improvements over economy
Nope.

baggage allowance
As economy for checked. Extra piece and 10kgs on carry-ons (not BOM).

on the ground (check in, lounge access, priority boarding)
As economy.

enhanced mileage earning?
Yes. 1.5x full economy.