The haulrope was replaced in 2015, but I'm not aware of any other work that was done other than routine maintenance. The gondola is 24 years old, and at that age, for detachables that run year round, usually a decision needs to be made on whether to complete a full overhaul of all major components, or replace the entire lift. If you look at other gondolas in the northeast, these are the ones that have received major overhauls, when they were originally built, when the overhaul was performed, and how old the lift was at the time.
Stratton, Summit Gondola, 1988, 2014, 26 years old.
Stowe, Mansfield Gondola, 1991, 2014, 23 years old.
Killington, K1 Gondola, 1997, 2018, 21 years old.
Whiteface, Cloudsplitter, 1999, 2020, 21 years old.
ORDA has an RFP out for new cabins for the Gore gondola. I'm not sure if anything else is planned. When Whiteface replaced their cabins, they also rewired the entire lift with a new control system. It significantly improved the reliability, which in the years leading up to the overhaul, was less than stellar.