This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
JBoss AS 6.0.0.Final is the latest stable version. The same binary will run on any operating system which has a certified JDK/JRE (like Sun/Oracle). So yes, it's going to work fine on Solaris if you have a proper Java runtime.