That's their purported scripting language for Unreal. By far the most "serious hobbyist" unfriendly aspect of Unreal has always been the heavy macro based C++. They tend to be people who don't like the idea of visual programming, so hate Blueprints (no hat in this race, I think they're ok), and have come from the cushy tooling you get with C# like Rider
Verse has a good chance to give Unreal a fresh start with some tight focused tooling and good ergonomics.
It's also a little ironic to say that since that's the opposite story of Unity, which dropped Boo and "Unityscript" to great effect... but that's how daunting C++ is for some people