When I moved to my parish a few years ago the priests were using ceramic chalices. I visited a few others in the area and they were all into ceramic or glass. I emailed the Bishop's office and the response was positive. The changes were made to gold and silver (metal) in these Churches. I even chipped in for a new one for my parish.
Also, the priest in my parish had the bad habit of walking the center aisle during his homilies. He does not do that any more.
Oh, that reminds me... the Pastor of the church I used to go to said one day in the homily that they had received an instruction to stop using glass a while back and they were supposed to break and grind the glass in their chalicem. He said he did not do that, but merely stored them away based on his experience with Rome changing its mind.