I just checked and the Z3200 is still being advertised on the HP website. It is still being sold by Lexjet and some others ( BH says discountined?).
Strangely Lexjet is selling it for $5,700.00 while they are selling the Epson 9890 for $3,200.00. A year ago they were underselling Epson and about the same price as Canon.
I love the stability of these inks and the dmax and lack of any technical issues. I hope they keep them on the market. But it looks like they are most interested in graphic designers these days. I still keep my Z3100 in warranty. I'd really miss not having one.