There's a typo in there somewhere - either the menu is wrong (it says Haagen-Dazs), or the food link is wrong (it says Blue Bunny). I think - and hope - it's very possible that the menu is correct, and they just put a link to the wrong item.
*EDIT: well, shoot. It looks like the new menus are already online (dated 4/16), and they specifically state Blue Bunny ice cream.
In looking at the new menus online, it bothers me that several of the "core entrees" are simply listed as "specials" on the menu, even though they're well-defined as staples on Amtrak Food Facts. In my experience, many of the dining car attendants don't know what the specials are, call things by the wrong name, or simply make something up if I ask them. It makes me wonder if the cooks are even making the specials at all.
I find it frustrating because two of the "special" items on the new menu - the chicken sliders and the salisbury steak - are things I'd like to try. I strongly suspect that they won't be available, but I'm curious to know whether anyone has seen either of them yet.