dropping 32-bit has been announced in June, right.
The new VST Scanner have been announced to developers in advance as well of course (in August), providing a tool to check if their plug-ins crash on scanning (here is part of the communication, obviously omitting code / tools / download / contacts: https://www.steinberg.net/forums/viewtopic.php?f=250&t=107322#p588614).
So, VST developers didn’t wake up to a surprise yesterday. Many of those affected by issues / blacklisting, have contacted directly by our developers, some actually have fixes ready.
For those who still rely on a few 32-bit only plug-ins, jBridge still works fine.
If you have VST2 / VST3 64-bit plug-ins getting blacklisted, please let the developer know, they usually know where to get in touch for VST SDK related info, if not, they can contact Steinberg Support, we’ll forward the info to the proper people.