https://www.prestomusic.com/classical/products/9773076--history-of-the-russian-piano-trio-vol-7
This 7th Volume of Brahms Trio's on going History of Russian Piano Trios series on Naxos will be released on July 25th (a 6th installment of Rach's Trio elegiaques will be released at an earlier date).
This is the first time I really see a major composition by Alexander Winkler being recorded, though a quick research revealed that a viola sonata (https://www.prestomusic.com/classical/products/7998229--russian-viola-sonatas) of his has been recorded (the recording may have been mentioned here before) other than a fellow composer (and at most times only a name mentioned) of the Belyayev Circle that participated in various cooperative works.
For Winkler's Viola Sonata, please see this thread:
https://www.unsungcomposers.com/forum/index.php/topic,9592.msg98362.html#msg98362
This sounds like a thoroughly attractive pair of piano trios. Thanks for pointing it out.
This has been released
Thanks for the update.