Hey! I really love this thread. I'm responsible for making Editor2. We're really trying to get it done as fast as we can, but because of the amount of RnD it has required, it has been really hard to estimate when it will be ready. Many of the problems we have faced have been "ungooglable". They have certainly been the hardest challenges I have faced in my entire career. In december 2014 (when I was happily unaware of most of them) I firmly believed we would see it being released in june 2015. So I'm basically unable to say when it will be ready for external production usage. However, it has come a really long way at this point. Some bigger things we have left to do are:
- Curve editing for particle systems
- Great auto-completion in the text editor
- Target device detection
This is not a complete list by any means, there will be significant work required in testing, verifying, "polishing and packaging", bug fixing, etc. But we are certainly in the "end phase" of making it. I would hope to have it out in 2 months, but it might take 6. I would have given you a better answer if I could. Like @ThunderZ said, it will mostly be a visual change at first, not really a major change in UX, like where you go to add things or how you put things together.