It was discontinued years ago but yes, for a while they were still manufactured to be sold in the outlets. Even those were discontinued at least a year ago IIRC.
I have one in chocolate. It's a lovely bag, although heavy and the straps are slightly annoying.
They come up on eBay constantly, and the going rate for the older style Mulberries is dropping like a stone, so as long as you get it authenticated on the Purse Forum before bidding, you could get a bargain.
I have a chocolate one bought from the York outlet in 2012 and DH ordered me a black one from Bicester for Christmas 2012 which was the last black one in the country apparently. I didn't see any last year so the SA was a bit off to be sneary. It has probably been just over a year. Try stalking the website naughtipidgensnest. She buys and sells many bags, is very trusted and sometimes has Roxannes. I think you can also ask her to look out for something you and many of her bags are new.