Its not long back when I talked about the release of DSD 2.1 (here is what DSD 2.1 has for you ) and what DSD along with pureQuery is capable of doing (get Ready to run your JDBC application faster then ever), and here time comes to even talk about 2.2 release. First of all I like to tell you that your DSD is no longer DSD, it going to be called ODS (Optim Data Studio).
ODS 2.2 brings a lot of new functionality and features which will allow you to integrate the complete data management life cycle. Here is the link to the announcement letter which also gives the details of the new features in this release. Annoucement
Here is the blog entry(whats new in ODS) from Sonali on this release explaining what new this release.
Also an entry on oracle support here (Overview of the oracle support in ODS)
The trial version of the product is also ready. Here is official page ODS Trial Download
So have a look at it and see how it banefits you.