It’s one diocesan convention that has voted to send a proposal to the church-wide General Convention. The proposal relates to any future revision of the Book of Common Prayer. If the resolution passes at the next General Convention, the Episcopal Church would be required to use “gender neutral” language in reference to God in the new edition of the church’s liturgical book.
Considering that this is the Episcopal Church, it’s kind of expected.
Years ago, some Presbyterians (PCUSA) did something similar where they allowed the option of changing the names of the Trinity, replacing the “masculine” Father, Son and Holy Spirit with “Mother, Child and Womb”. However, they still required everyone to be baptized in the name of the Father, Son and Holy Spirit.