Now that it no longer relies on the VST Bridge, Bidule can be driven by the host sequencer and you can run multiple instances of the plugin as an instrument or fx. The host will also save and restore the state of all the instances inside its own file format (no need to separately save .bidules for each of your projects).
Each plugin also "exports" 512 parameters that you can automate in your host and link to any parameter in Bidule.
Note that this plugin version of Bidule will only work for registered "Early Bird" licenses and is not available for "free" testing like the stand-alone version of Bidule is. It will be made a permanent part of the Early Bird v0.9000, and is intended to become a v1.0 'full' feature.
More information can be found in this thread in the Plogue forum.