Thanks for sharing these maps,its really hard to find new mapset for India.
But I dont think these maps are upgrade to "Garmin City Navigator India 2009 Quarter 4 " as these maps miss lot of POIs around my location also some places which were not their in 2009 Q4 are now marked.
But more dangerous thing is that these maps do not have some roads shown. I myself pointed out one, if you want to check than take a look around this point lat 26.890128°, long 75.794038°.
Not all maps show all POIs but missing an road which joins state highway to another road cannot be neglected. I deleted these maps and switched back to 2009 Q4.