You can read more about it here:
Another source with knowledge of the Cause told the Herald that panels of both the Archdiocese of Chicago and the Congregation for the Causes of Saints had judged the healing of a woman to be miraculous. The canonisation is likely to take place after Easter 2019.
The Archdiocese of Chicago had investigated the inexplicable healing of a woman who prayed for Newman’s intercession after suffering with with a “life-threatening pregnancy”. Doctors who treated her reported that they had no explanation for her sudden recovery.
Blessed John Henry Newman was one of the most prominent converts to Catholicism from Anglicanism of the 19th century.