Apple  has updated the line-up of its all-in-one iMac computers with new  models getting quad-core Intel Sandy Bridge processors, AMD Radeon HD  graphics and Thunderbolt technology. That means there   s a hardware  bump and also inclusion of the Thunderbolt data port, also used in the  2011 MacBook Pro models. Other than that, there   s no physical change  like different display screen. These new iMac models will be available  in India from today onwards from Apple Authorised Resellers. 
The  All-in-one 2011 iMac models will have faster quad-core Intel Core i5  processors from Sandy Bridge family for better computational  performance. New 21.5-inch 2011 iMac models have one Thunderbolt port  while 27-inch models have two Thunderbolt port. Intel bred new  Thunderbolt data transfer technology promises data transfer speeds of up  to 10Gbps. Apart from that, Thunderbolt also supports DisplayPort for  hooking high resolution displays and work with HDMI, DVI and VGA  adapters. 
New 2011 iMac models get top of the  line AMD Radeon HD 6700 series graphic processors for best graphical  output while enjoying movies or playing games. FaceTime HD camera rests  on the top centre of the iMac display and thereby enables video calling  at higher resolution. 

Pricing:
- 21.5-inch iMac (2.5GHz Intel Core i5, AMD Radeon HD 6750M & 500GB HDD): Rs. 64,900 (inc. VAT)
- 21.5-inch iMac (2.7GHz Intel Core i5, AMD Radeon HD 6770M & 1TB HDD): Rs. 79,900 (inc. VAT)
- 27-inch iMac (2.7GHz Intel Core i5, AMD Radeon HD 6770M & 1TB HDD): Rs. 91900 (inc. VAT)
- 27-inch iMac (3.1GHz Intel Core i5, AMD Radeon HD 6970M & 1TB HDD): Rs. 107,900 (inc. VAT)
Apparently, this update wasn't reflected at the Apple India online store at the time this news was written.