Probably undergoing CCS compatibility related enablement - this work appears to have started last month and is occuring at most every v3 supercharger in Mass (and presumably all across North America) in preparation for 3rd party CCS-to-NACS adapters becoming available in 2024.
This does not necessarily mean or include MagicDock to be clear - although that may be coming to some V3 sites as well in the area.
Burlington was also done in the past few days as well.