The present list of probables: Virender Sehwag, Suresh Raina, Mohammad Kaif, Yuvraj Singh, MS Dhoni, Dinesh Karthik, Irfan Pathan, Yusuf Pathan, Sreesanth, Manoj Tiwary, Ajit Agarkar, Karan Goel, Zaheer Khan, RP Singh, Ishant Sharma, Abhishek Jhunjhunwala, Cheteshwar Pujara, Rajesh Pawar, Piyush Chawla, Harbhajan Singh, Joginder Sharma, Rohit Sharma, Gautam Gambhir, Munaf Patel, Niranjan Behera, Praveen Kumar, Aniruddh Srikkanth, Ramesh Powar, Robin Uthappa, Niraj Patel
However, good to see Yusuf Pathanin that list. He is the elder brother of Irfan Pathan and is an allrounder.
Wait for more news...
Update:
The three masters have in fact opted out on their own. This is a good decision. I personally don't like T-20 a lot and dont want to see great players lose their magic touch in this game of pinch hitters.
Source: cricinfo