here's a pre-release for [vstplugin~] v0.6 - an external for running VST2 and VST3 plugins inside Pd.

Binaries for all platforms are available on Deken (search for "vstplugin~").

The most important new feature is multichannel support (requires at least Pd 0.54)!

This is particularly handy for spatialization plugins with many channels. For example, a single signal may now contain a full 64-channel ambisonics bus. With the IEM plugins (https://plugins.iem.at/) you can even change the channel count dynamically and the plugins will automatically adjust the ambisonics order.

NOTE: previous versions would hide certain (non-automatable) parameters in VST3 plugins. This has been fixed, but as a consequence parameter indexes might have changed. [vstplugin~] prints a warning for every plugin that is affected by this change!

Here is the full changelog: https://git.iem.at/pd/vstplugin/-/releases/v0.6-test1

As always, please test and report any issues to https://git.iem.at/pd/vstplugin/-/issues.