Recently WotC revealed that they will be republishing the three core rule books for AD&D. This probably serves as a way to keep D&D books on shelves during the period between editions, and possibly to gauge interest in re-releases. This will no doubt result in some players encountering the classic game for the first time, a whole new generation of people experiencing it. It will be interesting to see what those players may come up with based on their experience. They will be coming at the game from a totally different direction. It is impossible to say how many younger players will pick it up. Will they play it in large numbers, or will it be almost totally older players buying it?
I plan on picking up copies, but mostly just for collector purposes. At this point I hardly ever use the original rule books anyway. OSRIC works so much better at the tale, due to its better organization. At this point only a a rerelease that had substantial reorganization would replace OSRIC at my table. I even suggest OSRIC for people trying to start the game for the first time over the originals. While the DMG is great to read through, it is fairly difficult to figure the game out from the original books, especially combat initiative.