There’s a Yak-40 in active development, internal beta was just released. Come over and help the author with testing 
There was also a mention of an upcoming announcement of LET-410 series of aircraft but I think it’s vaporware.
Both aircraft are close to my heart along with the Tu-154. Ablomis’s Tushka as well as BACc’s Yak-40 have freeware level textures but alas, soviet aircraft are flown almost exclusively by connoisseurs among simmers