Scheduled to be published tomorrow. Looks like we can go back to using forfeitures to fund safe harbor contributions, as long as your plan allows it. Fortunately, our VS document has the phrase "unless provided otherwise under IRS guidance" at the end of the sentence about not using forfeitures towards SH contributions.
https://www.federalregister.gov/documents/2017/01/18/2017-00876/definitions-of-qualified-matching-contributions-and-qualified-nonelective-contributions