JSF 2.0 vs 1.x

[Bupjae Lee]

I bought "Core JavaServer Faces second edition" published by Prentice Hall few months ago and read.

However, this book was for JSF 1.x (especially 1.2), and Glassfish v3 (and JavaEE6) has JSF 2.0



Question:

1) What is difference between JSF 2 and JSF 1.x?
I failed to search "What's New" page of JSF 2.

2) Is my book still useful for using JSF 2?


ps) I have same feeling when I bought EJB 2 book (Head First EJB) and new EJB 3 was introduced very soon...