Bioware CAN'T not even in their most wet dreams deliver what they promise. We all know, we know, they know, that most of what they plan won't work, so if they revealed it all we would have a lot of reason to complain about the patch when they release it. So they work in secret so that they can safely cut anything that is not working well and release as if the patch had all they planned to put in it.
At least they know their ambitions are way above their skills. They know they suck so they are right in not letting us know everything they are testing. Bioware games are unable to reach even mediocre status of gaming, let them safely try to release a patch as they stumble and trip in secret. Programming is never simple and rarely goes as planned but they are gifted in they ways of incompetence.