Confusion bout questions 2 b asked in electricity companies!

I have studied replacement of assets, capital base and distribution of surplus, b/s etc. in study mat. of 2011, but i have heard that substantial part of this chapter has been changed in stud mat. of july 2012 and i dnt about those changes?? so, plz tell me what topics or question types would be asked in may 2013 exam?? plz also provide some link or document from which changes can be understood....