I suspect they are suffering the same fate as Woodstock, Salisbury, Quispam (I think) and Baileyville. The work mostly done, just need the actual pedestals which seem to be hard to come by.
There's a nationwide shortage of pedestals right now. I hear that GF3/Buffalo is building the version 3 equipment ... I wonder if they're also taking over production of pedestals, causing a temporary shortage while Tesla transitions from one manufacturing location to another (vertical integration, as well?).
Other sites waiting on equipment include Hudsonville, MI; Albert Lea - Happy Trails Lane, MN; Swartz Creek, MI; all three sites in New Brunswick, Canada; all three sites in Maine; ... the list goes on.