According to me yes Shanti Seva Nyaya is the new slogan of Delhi Police after Aapke Saath and here I will let you know more about it.

The Delhi Police was setup in 1861 with 6 Ranges, 13 Police Districts, 62 Sub-Divisions with 184 Police Stations which help to make city crime free and under disciplined manner for citizens.

Ranks in Delhi Police
Commissioner of Police (CP)
Special Commissioner of Police (Special CP)
Joint Commissioner of Police (Joint CP)
Additional Commissioner of Police (Additional CP)
Deputy Commissioner of Police {Selection Grade} (DCP)
Deputy Commissioner of Police {Junior Administrative Grade} (DCP)
Additional Deputy Commissioner of Police (Additional DCP)
Assistant Commissioner of Police (Assistant CP or ACP)
Inspector
Sub Inspector
Assistant Sub Inspector
Head Constable
Constable

The Delhi Police undertakes the following activities:
Investigating crimes
Controlling criminal activities
Protection of women
Control traffic problem

Services
Missing Children
Missing Persons
Un-Identified Children Found
Un-Identified Persons Found
Un-Identified Dead Bodies
Senior Citizens Registration
Stolen Vehicles Search
Unclaimed Vehicles Search
Missing/Stolen Mobile Phones

Address:-
Delhi Police
MSO Building, Indraprashta Marg, IP Estate, New Delhi, Delhi 110095

Phone:-
011 2349 0010