You mean you missed the announcement?
And you just followed that link and still couldn't find it? It's under "utilities", no, it's not that kind of utility, but still, that's where it is.
What is added is built-in functions for contains() and score(), and also shipping a text search server which runs on a separate, non-z/OS server. For more details, see the announcements!
One prerequisite for this is to have a WLM application environment set up to run a java user-defined function. The early customers I've been working with have had the most stumbling with this part of it. So, this is something you can set up even if you are not quite to DB2 9 for z/OS yet. I'll post some more on the setup steps for that.
So, what kind of data are you going to search, and what kinds of searches are you going to do?