iScreensaver version 6.8.5 has a number of bugfixes and improvements, including fixes for several issues that could cause issues when running under macOS Ventura 13 (currently in beta, soon to be released) Authors distributing screensavers for macOS clients should update, re-build, and re-distribute their screensavers. Authors only supporting Windows clients can upgrade at their convenience.
macOS Monterey 12
iScreensaver 6.8.3 has been tested and found to be fully compatible with macOS Monterey (12.0 through 12.3)
We are testing on the current 12.4 beta and so far have not found any issues, but will update this note once the 12.4 version is officially released.