Yeah toxicilibs is unaffected owing to the studious avoiding of anything implementation specific by Karsten Schmidt, slight gotchas are the some of the examples that use some opengl "hints" that have gone away. For example the smooth hint is now replaced by smooth(x) where x can be 2..4..8..16 (I'm not sure this is documented). Other libraries that rely on PGraphics3D to export 3D geometry, like my povwriter export library will be broken (I have a created a replacement povwriter2 library to work with processing-2.0). In general I think there will be a period of adjustment, if you can work in Eclipse or Netbeans instead of the processing ide when working with such contributed java libraries you will have a better experience than using the processing ide (unhelpful error messages).