The first beta 4.7.2 for the Marble was released in December, if I understand the earlier comments correctly. The version available for Download (at GL.iNet download center) is dated May 14th, so I assume that means GL-Inet developers have been working on it for 5 months. Is the May 14th version working well enough for a non-developer to install and use it? Or is it only intended for people who are experienced OpenWRT testers?
I read the release notes. They talk about new features. There's no list of unresolved issues. So I'm optimistic that this beta is ready for a wider audience, but there are some experts on this thread, and they'll know better than I.