Gauging the readiness of Vaadin 7 for a new project

Hello all. I’m new to Vaadin but have been reading through the documentation for 7, as we’re seriously considering it for a project and figured it’d be best to start with the latest and greatest. However, tonight I got to this section

It states
Because of pressing release schedules to get this edition to your hands, we were unable to completely update this chapter. Some form handling is still under work, especially form validation.

I completely understand how that sort of thing goes, but at the same time, it makes me wonder if I’m making a mistake by starting with 7 instead of 6. What are your thoughts? How can I learn about form validation in 7 if there are no valid docs?

Thanks for your help!