FWIW, GWAVA did not have the application ready a couple months after WES. I was under the impression that it was ready to be shipped. They never contacted me back after I initially contacted them (twice).
...it still doesn't look like they've brought that application to market. It's a wonderful tool, although it's simply a database importer and retention-holder for the BES log files with a nifty little interface that allows you to search and manage/audit the messages. Definitely a great idea for a tool for legal departments in the United States.