Seems like Honda My and some party started collecting for new City bookings now..
Does that mean the previous pre-facelift version won't be available anymore?

For eHEV version, which driving style is the most efficient (in recharging the battery).

Coasting (release the pedal), braking, or use the Regenerative braking mode

All of these will charge up the battery while driving, but which are the 'best' one?

coasting - slow charge, longer period
braking - faster charge, shorter period.