It surprises me that they haven't done a new Starter Set as well, but in a different way.
Today I was at Target picking up some stuff and of course my son wanted to look at the video games. Across from the video games are the toys and sitting there on an endcap were dozens of D&D Starter Sets - something that hasn't been on the shelves at Target for a few years.
The Starter Set came out in summer of 2014, so it's a 4 year old product. They're still selling Starter Sets four years later at non-specialty stores to the general public. It's surprising, but in a good way.
I do wonder if someday we'll get the "specialty" versions of the D&D Starter Set the way that Hasbro puts out special versions of Monopoly or Risk. I know they've tried it in the past - I've still got the Diablo II boxed set based around 2e AD&D rules. It's tougher for D&D, I think, because you need the theme of the licensed property to mesh with the D&D theme (Diablo II was kind of a no-brainer there). There aren't a lot of properties where that makes sense though. And unlike those kinds of specialty versions of Risk or Monopoly, a good Starter Set should be introducing people to the broader game, not just be a way to sell more boxed sets, so it's a different kind of product.