I find all sorts of things on the internet. Tumblrs, twitters, FTP lists, on one occasion typing the word "Batman" into the DC Comics search engine and finding a roster of unannounced projects.
Publishers are a lot more discrete these days, but even so, these things still find their way out.
Such as this visual, with the filename "sispurrierprojectnew.jpg". So, that's London writer Si Spurrier.