There was a seeking alpha article about this today. No speculation on when the next mark to market will occur, but it did finger a couple other companies that could potentially have large mark to markets in the future. http://seekingalpha.com/article/1021261-hewlett-packard-a-cautionary-tale-about-mark-to-market-risk One of the companies mentioned, ANR, is already down 5% today, does get one thinking about whether there are other opportunities here.
Sure there is: shelf space. Fully 3/4 of the printer and ink space at the local Staples stores are taken up by HP. I think it's brilliant that a model that differs from another only in that it has an extra paper tray - in a completely separate module that could just as well be sold as an addon - is instead a completely separate model. When lots of your sales to both consumers and businesses are through retail stores, shelf space is vital.