I'm the developer of Foundry; the second article is mine.
A more recent article on the same topic would be "A language for embedded developers"; or you could also track development progress by subscribing at foundry-lang.org.
Please note, however, that my project is commercial, (at least initially) not open-source, and is primarily focused on embedded development. You could still use it on desktops or servers, of course.
I'm also one of ruby-llvm maintainers; please report the problems you've encountered as bugs on the project page.