As you can see on the git activity, there's not much happening on Designer 2.0 at the moment.
Right now we're focusing on our other tools and making sure that we have a great developer experience across all the tools, and consolidating them into a few more easily accessible offerings. This is some of the highest priority work we have in 2016 because it impacts all of our users.
I'm very eager to get Designer work started again, it's very important to the team and me personally, but it's a matter of priority and time at the moment.
Cheers,
Justin