Well put it this way. AIUI Southern has absorbed the 'Gatwick Express' franchise due to the severe lack of pathways on the Vic-Brighton route. Southern will run a 'new' fast service of Vic-Gatwick-Brighton, and the units they will use are 442s - I don't know if this will be the whole 442 fleet.
It's not clear yet whether this is to be a 24hr/peak only/off-peak only service as rumours are rife.
