Honda has gave a facelift to the car in 2012, and they might again give it a facelift in 2014.
Please check all information related to Honda City service and maintenance here http://www.cardekho.com/honda-city/service-cost.htm
Certainly, you can get your car modified as per your choice. Coming to the front grill, you can replace it with the different grill. For that, we suggest you to get in touch with the authorized service centre as they will be the best people to suggest you few compatible grills to choose from.
Click here to find the Honda service stations by selceting your city in the drop down list.