It was suggested that I post some information here.
The site is huge---it has taken a team of 8 working full time for over a year to bring us to this point. The first third of the on-line text already has more than 10,000 screens. There is a quick "feature tour" available at the site. The publisher will be giving free "desk copies" to instructors to use at home or in the classroom. Student copies require a paid subscription.
I am excited about this "new" type of calculus text. With this site, it's not just a student interacting with a computer, but it is also students interacting with each other.
Ron Larson, Ph.D. Professor of Mathematics Penn State University firstname.lastname@example.org