Whether to buy law book now ??

Agreed it is available in Market but it is for Nov 13, for May 14 specifically it will be availble by Feb.

 In my opinion, You can even go with your old book. As no such big amendments have come in way. And even new companies act is also not applicable. 

So y to create so much fuss.  Rest is ur wish. 

fully agree with renu

I will be studying from Handbook 11th edition. It is a bit old, but there are just a few monetary limit changes, e.g. in section 314, FEMA limits etc. I don't feel there is a need for the latest one.