Quite a lot. Honestly, I lost count.
I'm not sure what you mean by new roles.
That is, will there be new characters added to the plot in future versions? 😁😁, Whether you want to see if you want to add new characters according to the progress of the plot, or just add them.
Not many. There's more than enough characters already.
But yes, one or two more will probably show up playing a minor role.