This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Yes, the book does cover migration, and it makes the process of moving from 3 to 4 fairly easy since we were all in the process of transitioning while we were writing it, so there are a lot of "migration tips" that we included as we encountered related issues.
Dan Orlando Adobe Community Professional
Author, Flex 4 in Action (Manning Press)