In the thread http://manual.3dgamestudio.net/beta.htm
V8.31 - released Feb 14, 2012
As a PRO user, I could not find any download link to get
the update patch, even the official support give no responce.
Does the latest version really be released?
When and How???!!!

You need to be a beta user (which you should be when you are using a pro version). That way you would have access to the beta forum where the latest beta link is.

i use A8 pro, too
But have no permission to see topics in the beta Forum ^^

How to get access to the beta forum is explained here:
http://manual.3dgamestudio.net/beta.htm

Thank you guys. I am now clear about the approach.