Dear Sara, a word from an old Vue user : You should not worry to buy Vue 4, because you will love it MUCH more then Vue 3.1. Myself and all the other "oldies" can tell you that e-on never, never ignores us and always gives out fixes as well as updates for an existing version for free. Sure Vue 3.1 is great, but when you have "tasted" Vue 4, you would not like to go back to 3.1 :-) Friendly :-) Guitta