On April 25, 2013, we mailed a notice requesting evidence/information for this case to you or your representative. Please follow the instructions on the notice to submit the material requested. This case will be held in suspense until we either receive the evidence/information or the opportunity to submit it expires. A new processing period will begin when we receive your response. You or your representative will be notified by that office of a decision or if any further information or action is needed from you. If you move, please use our Change of Address online tool to update your case with your new address

Does any body knows what " A new processing period will begin when we receive your response." means??? please help