Hi Tarun,
As I wrote in my original post - I am not able to see attachments in the shop for a product which I have uploaded a PDF for in MDM... so I can confirm it is not working for me...
In the following SAP-pdf (for WCEM 2.0): http://www.afsug.co.za/library/documents/WCEM_AFSUGCRM.pdf it says "Rich product detail view provides a wide variety of product information including images, attachments, multimedia files, etc."
... so I am quit sure this should be out of the box.