Today we've launched our Scripts 2.0 update. You can read all about it here. Also, see this awesome little video of live code hot swapping working across 4 mobile devices!
(by the way, yes, that is an iPhone4S!)
New projects you create from today will use the new script system, but your existing projects will not change and will carry on using the legacy scripting system. You can also create a new project with legacy scripts enabled.
However, some awesome new features in the new scripting system: live code hot-swap, script concatenation/minification, real-time collaboration on code files, put scripts in folder(!), better error handling.
Let us know what you think.