Unless Aer Lingus opt to have a 3rd based unit for winter ALC not going to happen . I'd also suggest they will not launch a new euro route in Winter. I'd be very hopeful for them adding another airbus for 2015, but they may just play it safe.
The last winter season on BFS ALC they did friday late and Monday late rotations on the route, these did well in terms of popularity , so much so the next winter easy followed a similar pattern .