What is the meaning of JBoss GA version?

GA, SP, CR meaning:

• Final = a polished, tested, and approved version
• GA = General Availability, a final version preparing for the big time
• CR = a Candidate Release in the running for GA, undergoing final testing and QE
• M = a Milestone release, rolling features and bug fixes into a build
• ER = an Engineering Release, typically a build for the engineering team