Subwolf, you know very well it has been tested! I myself assisted in b.t. 2008 version, so I can tell you that sse (which I have had nothing to do with (apart from campaigning for DCITSE!!!)) WILL have been extensively tested.
My own opinion, which isn't based on any known facts but merely the fact that I'm brilliant in about every way, is that the beta testers identified lots of bugs, the developers tried to remove as many as possible, but ran out of time and released anyway.
I personally agree that they should never have been pressurised into an un-realistic release date. Vstep is now (or should be) sufficiently experienced to gauge timescales!