The code shown in those images is not in the programming language that is being introduced/created now by SPJ. It is clearly a separate (and not functional) scripting project.
The screenshot you linked to shows boolean variables being defined ("bool") while the new SPJ language being discussed here very conspicuously lacks a boolean type. That fact alone is enough to convince me that there is an "old", less cool, less ambitious Verse language, with different syntax etc. which is about to be replaced by (or as Tim says in tweet, get "converged with") the new SPJ Verse.
They apparently like the name/branding so much that they want to keep using it, even though the fundamental principles of the language are going to be different. That does seem potentially confusing but it's their business. After all, the old verse never got released to the public.
So it seems totally clear to me that a previous, less complex and ambitious, scripting language called "verse", which has been around for a while and never really gone anywhere, is going to be replaced by the new SPJ functional language "verse".
> We're more than a year away from an open source implementation that's converged with what's in Fortnite. In 2023 we'll be giving lots of talks and likely releasing some of the research pieces.
https://mobile.twitter.com/saji8k/status/1339709691564179464...
I believe it has roots in (but quite different from) Skookumscript
https://skookumscript.com/about/look/