Think like a beta version of software.
WGT sometimes "allows" back-doors to leak out. Then we find it and, if we play it enough and there is a problem, they can correct it before they "officially" release it.
I played PB F9 (remember, F9 came out 6 months before B9) and CB before they were released. So we just need to keep looking for it, when it appears.
Tom