Hopefully positive but I bet they continue to use the class 319 sardine tins and just paint them up with Southern.
Those trains are an utter disgrace and FCC love the first off peak train from Brighton to be a four coach 319 I'm sure the staff at E̶a̶s̶t̶ ̶C̶r̶o̶y̶d̶o̶n̶ Scumvile like watching...