I agree that MacRuby is the most likely 'successor' (or rather, alternative).
Another advantage of MacRuby over some other 'scripting languages' is that it can be compiled to an executable via LLVM bytecode (per macrubyc). This will be appealing to anyone who doesn't want to give away his/her source code.
Another advantage of MacRuby over some other 'scripting languages' is that it can be compiled to an executable via LLVM bytecode (per macrubyc). This will be appealing to anyone who doesn't want to give away his/her source code.