[mjothi]

Can you let us know if there are any feature change? or just normal renewal?

I am not sure if you can change it to TATKAL now. But you if you have solid proof of travel (say invitation letter, confirmed itenary etc) you can approach the passport office and show the urgency. It is also possible that they are waiting for some response from your side. No idea. So, first is to visit the local police station and check.