From the IRCTC website, (only for Mumbai suburban travellers though):
IRCTC is launching a great new service for the convenience of Mumbai suburban season ticket passengers. Now a registered user of www.irctc.co.in can book his/her Mumbai suburban season ticket through Internet .Clearly, someone who manages the online site is trying to maximise the online reach of the railways. Already the printed ticket (e-ticket) option is extended to most trains and now season tickets can be booked via the net.
In the physical side of the railways, we need someone who transforms the railways into a staid 50kmph thing to something more convenient and faster in tune with the times.