Today one of my readers received RTI reply from Corporation Bank. After this information it's clear that second allotment will be delayed by at least 2 months.
Information extracted from RTI reply
1) Till now Corporation bank is unable to send appointment letters to selected candidates. After this process, bank need to give at least 45 days time to join then bank will send the list of unfilled seats. Then IBPS will collect the lists of vacancies and then IBPS will release the notification.
2) In the reply Corporation bank said that there is no unfilled vacancy. This answer is vague as till now candidate is given any opportunity to reply.