CT just don't have enough train cars to have very many 4 car trains with the frequencies that are being run, afaik the capacity of the system is the highest it's ever been even with 3 car trains. There's been a handful of new cars delivered but they haven't been put into service yet because of commissioning issues, and a lot of these will just replace dead U2s. There's an option order for a lot more but I don't know if that's been funded yet. Edit: The order is for a total of 40 LRVs to arrive by the end of 2027, the first 14 cars are nearly all delivered
