Bhumika, all books present in market for Costing are for old course only. E.g. sarvana prasad (Padhuka), Saxena Vashisht, Makkar sir's notes, shridaran's etc. are all customised for old course not for new course
Only book which is upgraded for New course if of Parag Gupta sir's, but again as Deepak said, his book contains only hints and answers (not solutions). But yes indeed, concepts about every chapter is really superb. It explains each & every thing in a very simple and step wise way. Soft copy of his book is available at https://groups.yahoo.com/group/costingbyparaggupta/
Sherin, you need to join his yahoo group via above link to get his book.