The same question should apply to every other piece of technology that gets outdated each year or so. Where did all the previous models of Canon Cameras go, when the stores only sell the latest models? Or Sanza Clips, iPods, Cellphones, Laptops, and everything else.
Where do all of yesterday’s newspapers, and last month’s Reader’s Digest go?
If you want to stick to Yeshivish – where are all of the giant Chosson Shas’s, Rambams, or Shulchan Orachs that were still in the old print – not from Oz Vehadar, Frankel, etc…?