Here are a few more:
WKSB 102.7 mHz Williamsport, PA (this one may have been doing it for some time but I don't know when it started);
WVLY 100.9 mHz, Milton, PA (I don't know when this one went all-Christmas but it flipped recently. It's being sold to EMF so expect a new Christian format in January.)
KOOU 104.7 FM, Hardy, AR (While I didn't hear the flip, I do know it flipped last night around midnight. There are a lot of classic country forgottens this one is playing.)
WILE 97.7 mHz, Cambridge, OH (I believe this one flipped at midnight last night as well.)