ASNA has many products that support many platforms. We have a couple of documents available on our Web site that can help you understand what's available, what's current, what's retired, and what each product requires.
ASNA Product Version Policy document
Generally, our version policy is to support the current version of a product and one version back. That's not to say that unsupported versions will magically stop working, but generally, if you have issues with an unsupported version you may need to upgrade to a supported version to resolve that issue. Read the the ASNA Product Version Policy
ASNA Retired Version Information
Retired products are those products no longer activity tested or modified, but that are probably still in use. Read the ASNA Retired Version Information document.
When customers call with platform/version questions, these are the two documents we check immediately. They are also available from the ASNA Support Overview page.