Looks like a new base at Berlin-Schonefeld (SXF) from the winter season...
FR4732 dep. SXF 06:30, arr. BGY 08:15
FR4731 dep. BGY 08:40, arr. SXF 10:25
FR4734 dep. SXF 19:55, arr. BGY 21:40
FR4733 dep. BGY 22:05, arr. SXF 23:50
Still no times showing for STN yet but would assume that would change to an SXF aircraft, so probably 2 aircraft?