What are you basing this information on? Eligibility is just one stage in the process; his/her criminality and security still needs to be checked; and his/her eligibility needs to be changed from recommended passed to passed before criminality and security will happen.Based on this notes. looks like they made it standard that there will be a batch of DMs and PPRs only once in a month (start of the month). because it says due date sept 29; that means that your file is done; but just waiting for a batch to release.
For reference: My application due date was 2017/08/19 and here I am still waiting for BGC, DM and PPR.