While the MM website isn’t the best for news, it does function to some extent as an archive.
Frustrating not knowing what’s going on, nor when, but if the likes of A/S / IRM, Mark’s Models and Rails of Sheffield are going to be stockists, keeping an eye on their websites may help.
As @j11sty pointed out, @BosKonay removed the Murphy Models 071 project from the Project Updates area on the A/S / IRM website. I’m sure it will be added back in whenever there’s news.