I don't see a need for this, since its pretty much the same with "publishing to Android".
There's no special format or anything else needed specific for Blackberry. You just need an APK.
Blackberry actually already support APK since almost 2 years now, on its own OS.
Putting "Publishing to Blackberry" is like putting "Publishing to Samsung" / "Publishing to HTC"...etc.
No offense, but this doesn't make any sense.