What does tax code 570 mean

Code 570 on your tax transcript means that the IRS has put on hold the processing of your return. This could be due to a number of reasons: 

This IRS guide describes code 570 as Additional Liability Pending/or Credit Hold.

This code will be reversed by code 571 when the IRS resumes processing your return.

Will it release on the date that shows on the transcript 

The 4/15 date is standard for the IRS when a credit on a return is posted to an account. It doesn’t mean that that’s when your refund will be disbursed.