Facebook released Origami 2.0. You can view your prototypes on-device now. Huge. I think the next biggest thing is the Tutorials section. The learning curve is high and it wasn’t helping that you needed to pull good resources from here and there. No longer.
I’m working through the tutorials and they’re great so far. Combined, they’re a little over an hour and they’ll get a novice to a good point. I’m excited to really try diving in soon.