I don't believe it's happened yet. Last I heard there was an issue at one of the test sites that caused them to pause the replacement plan, but that was like 9-10 months ago back when we weren't trying to cut NOAA's already meager funding in half.
EDIT: Looks like they have begun to roll some out to southern region stations.
EDIT2: On second look, it looks like they are done with half of the stations. Around here: BDL, HFD, IJD, ACK, BED, BOS, BVY, FIT, HYA, MVY, ORH, TAN, PVD, UUU, WST, and PYM.