They are inviting requests from users and educators to participate in Beta testing. I wrote this in my request:
Our student tech team members have been using Scratch 1.4 extensively and have produced increasingly interesting and elaborate games. They are so engaged with the experience, that they spend weekends and vacation time working on Projects.
They used the Scratch viewer for iPhone briefly until Apple pulled it from their App Store. I'm confident that they will transition to this new level of development without breaking stride!
Scratch Gallery: http://scratch.mit.edu/galleries/view/75680
I'm eager to see what they will do with this!