Well, a whole lot of things have happened, but in a nutshell:
- Our proposal was closed as a duplicate.
- We got an offer from Physics Overflow to host the site. But due to some differences with Physics SE we had to decline the offer.
- @Mew is building the new site by hand outside Stack Exchange network. (Prototype: http://physicsproblems.nfshost.com/?qa=questions)
We want the relations between our new site, Physics Problems Q&A, and Physics.SE to be friendly. Hopefully, once our site is firmly established, we can establish some sort of protocol for migrating questions between sites, or at the very least recommending the other site to users. We certainly do not want a relationship like that between Physics Overflow and Physics.SE. We would be glad to welcome any users to our site; please see our first draft of our scope and guidelines to know what we expect. Moderators on the site are @heather, @S007 , and @Mew (username Einstein on the new site).
Our site is coming along quite well although there are still improvements to be made, both in the construction of the site and in the general guidelines. If you have any questions, the chatroom on the new site is still under construction, so please ping one of us at the Physics Stack Exchange chatrooms.