Okay where to start... Because I rewrote the Mesh/Batch classes I had a little more work to do with the new Mesh loader. The new loader now supports texture and shader loading automatically, mesh files are text based at the moment so their easy to edit and try new options... hmmm not so bad.
Engine is running on Mac, iPhone and iPad with all new features. Mac OS X OpenGL 2.1+, IOS 5.1 OpenGL ES 2.0
EDIT: And here is the Leaks test for app going in and out of Active/Background IOS state.