I believe they are not available though I would love to be wrong. I can find no trace of them in any info from VAG, other than the announcement last year, and the dealers don't know of them either. Though that is not a clear indication really as they seem to not understand even what has been confirmed.
One example is a dealer proudly informing me that the CEB would only slow the car down by exactly 30 KPH. The example he used was that at 40 KPH it would apply the brake and then once it had reduced it to 10 it would stop breaking and allow the accident to take place but at a reduced 10 KPH! What a great system! Except fortunately that is not how it works. I know better and so that rubbish did not put me off but anyone else test driving the car who had not researched it might understandably think that it was not as good as systems offered by other car manufacturers.
Another dealer informed me that yes it did have Car Net and it was the two SD card slots in the glove box. I then informed them of what Car Net really was and they became quite enthusiastic about it till they remembered that we did not have it in Australia.
I find it ironic that they are selling the new Passat as "the thinking car" when in fact they have chosen to give it a partial lobotomy, only allow it to attend primary school and bared it even from high school never mind university.