After the Yak-2 (http://www.britmodeller.com/forums/index.php?/topic/234980145-148-yakovlev-bb-22-yak-2-by-mars-models-released/) Mars Models has released a 1/48th Yakovlev BB-22bis (Yak-4) kit - ref.48002
Sources:
http://hobbyterra.com/product/yakovlev-yak-4-wwii-soviet-light-bomber-in-1-48-scale-mars-models-48002.html
http://amarket-model.ru/shop/index.php?productID=4607&ukey=product&did=34
http://www.hobby.dn.ua/yak-wwii-soviet-light-bomber-148-p-72529.html?language=en
V.P.