IDEA 11 is not usable for me since most of user plugins do not work anymore because of API changes (mainly "Error while registering component: com.intellij.openapi.components.OldComponentConfig").
I have 2 questions:
1. OpenAPI for IDEA 10 did not introduce major breaking changes compared to IDEA 9, most of plugins still worked. It won't be the case for IDEA 11?
2. As plugin developer, is the OpenAPI stable enough to start migrating plugins? Do you plan to provide a migration guide?