There is some discussion on KVR about it here. The links given there don't work anymore, since they are now:
Beta1
Beta2
Beta3
[I'd like to mention that the reason for the word 'Beta' appearing so many times is that this was (and still is to some extent) a work in progress; and whilst the plugs work, you may get some irregularities in performance - the usual labs disclaimer applies! Having said that Admiral Quality is the only one who ever reported unusual behaviour, and that was in Live v5 under certain circumstances with one of the plugs.]
I'd be interested what new opinions there are on these. One day a proper plug will come of it, but until then there are just these betas.
ATB
DSP