Regarding versions: as Olivier use a different and more powerful Arduino board that
isn't fully compatible/running to Arduino 1.0 libraries yet, we'll have two parallell
projects running (or more). For myself I'm primarily interested in Arduino 1.0 + Xcode 4.2
as I'm just recently come aboard and might as well start with the most recent iteration of both.
Tim: How does A*.app 1.0 seem to have changed from 022?