This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
You probably mean the difference between 310-081 and 310-081, because I think that 310-082 was an upgrade.
Anyway, you'll find some information in the SCWCD FAQ. (What's different from SCWCD 1.4 and 5?)