I just received an email from the guys over at Mobile Spy informing me that their BlackBerry spy software is very close to being released. When asked, they stressed it's closer to "days" than "weeks" which is good news to me.
Specific features are not known at this time, but I bet it's safe to assume all the standard spy phone features will be offered such as being able to secretly read incoming and outgoing text messages, reading call logs to find out which calls were made and/or received. Other spy phone features such as spying on emails, messenger conversations, GPS tracking, & remote monitoring are unknown.
Here is a screen shot. Looks like the installation instructions.