“Banns for the diaconate”?

While reading the bulletin for Christ the King Catholic Church in Ann Arbor (see here for more on that story), I spotted this item:

Peter James Lawrence from this parish is scheduled to be ordained as a transitional Deacon on May 16, 2015, for service to the Diocese of Lansing. Anyone knowing a serious reason which impedes his Ordination should make this known to Rev. John Linden, Director of Seminarians, Diocese of Lansing, 228 North Walnut, Lansing, MI 48933, no later than April 20, 2015.

I know banns for ordination to the priesthood are not uncommon. But this is the first I’ve encountered something like this for the diaconate.