As far as I can tell, it’s pretty much the same as the Rhino 8 scripting components. But with the new additions Ehsan outline in the topic above.
I haven’t tested scripting performance in GH2 yet, but the new Rhino 8 Iron-/Python scripting components were/are slower than GhPython in Rhino 7. So maybe temper expectations. On the other hand, simple/inherent parallel execution does sound quite cool!
Edit: From a very quick/mostly meaningless benchmark, performance looks fairly similar:


