Any changes between last 2 editions of DS Rawat's book

Sushant Lohani (CHARTERED ACCOUNTANT) (1051 Points)

28 June 2011  

I am giving CA final this november.A friend of mine is giving me his DS Rawat's book from which he studied for May2011 exams.That was the most recent book for may2011 exams.

Do i have to buy new edition for nov2011 exams or will the old book suffice? Are there any amendments?