PuTTY 0.75

Do you know when WinSCP will support keys generated from PuTTY 0.75.

Currently getting an error message

unable to load key file (PuTTY key format too new)

We are working on this:
https://winscp.net/tracker/1984

Though, even the new version of PuTTYgen can generate (or convert) keys to the older format supported by WinSCP. So it's not a showstopper:
https://winscp.net/forum/viewtopic.php?t=30961#106361

Support for PPK3 keys will be added separately to a complete upgrade to PuTTY 0.75:
https://winscp.net/tracker/1986