Featured below is the FAQ that was issued (and still remains on the CIS website) after they did away with the 180-day rule:
Q50: Can I file a renewal request outside the recommended filing period of 150 days to 120 days before my current DACA expires?
A50: USCIS strongly encourages you to file your renewal request within the recommended 150-120 day filing period to minimize the possibility that your current period of DACA will expire before you receive a decision on your renewal request. Requests received earlier than 150 days in advance will be accepted; however, this could result in an overlap between your current DACA and your renewal. This means your renewal period may extend for less than a full two years from the date that your current DACA period expires..
If you file after the recommended filing period (meaning less than 120 days before your current period of DACA expires), there is an increased possibility that your current period of DACA and employment authorization will expire before you receive a decision on your renewal request. If you file after your most recent DACA period expired, but within one year of its expiration, you may submit a request to renew your DACA. If you are filing beyond one year after your most recent period of DACA expired, you may still request DACA by submitting a new initial request.