Either way getting Carmack into language design has very exciting implications. He seems like an ultra pragmatic guy and is undoubtedly a great programmer.
Arcadia dev here! We're always actively working on Arcadia, and are closing in on our next release that brings with it a package manager and all kinds of other goodness. Keep an eye on the repo or jump in the gitter for updates.
Lisp in VR is super exciting! We're following Carmack's work closely.
https://github.com/arcadia-unity/Arcadia
Either way getting Carmack into language design has very exciting implications. He seems like an ultra pragmatic guy and is undoubtedly a great programmer.