First prototype.
Fw 58 V2
Second prototype.
Fw 58 V3
Third prototype.
Fw 58 V4
Fourth prototype.
Fw 58 V14
D- OPDR, was fitted with Fowler flaps and boundary-layer suction for high-lift experiments at AVA, Göttingen. The suction system was powered by a Hirth aircraft engine in the fuselage and the air exited through two circumferential, parallel rows of slots in the rear fuselage section.
Fw 58B
Fw 58B-1
Fw 58B-2
This version had a glazed nose, and was armed with a 7.92 mm (0.312 in) MG 15 machine gun.
Fw 58C
Fw 58W
Twin-floatplane version.

Focke-Wulf Fw 58W Weihe
Gunston, Bill & Wood, Tony - Hitler's Luftwaffe
Wikipedia: Focke-Wulf Fw 58