"To accomplish that transition, Sun is doing more than acknowledging that MIPS are a commodity. According to Gingell, even the operating system is a commodity. From his point of view, neither SPARC nor Solaris are differentiators. Solaris doesn't have a lot of secret sauce, just good code, Gingell said. Instead, Gingell wants to see the parts of Solaris that can't be found in Linux open-sourced and then merged with Linux. He calls the result "Linux by Solaris.""
More support for the software and services strategy. So maybe JBoss and Sun are competing with each other more than they think.