FN has simply closed the New Haven plant. The affected lines are the M70, M1300 and M1894. The rest of the Winchester line (Select, Energy, SX2) will continue to be manufactured. The future of those lines is up in the air.
FN made the decision becuase that plant, USRAC New Haven, has been in the red for a 15 years. Every year for the last 10 years, FN has stated that "This is the last year!"
It's amazing that FN held off for so long.