If you call the number on their website, they have some Sabrinas still in stock (I called earlier this week and they had 3 colours left in the small leather style...and they may have others in the large leather and in the op art prints too).
Some people have heard that the Sabrina is coming back in new colours, while at some stores they say that the Audrey has replaced the Sabrina, and there won't be any more Sabrinas produced.
I'm hoping to see new Sabrinas soon - but I can't wait that long, so I've ordered directly from JAX (the head office).