The whole re-release thing was started in the early 2000s as a means of boosting the profile of albums that initially underperformed. They would give it a brand new album cover, remove lackluster album tracks, add brand new songs, etc., etc. MJB's NO MORE DRAMA and JLo's JLO were prime examples of this; both got off to slow starts but took off after they were repackaged. After that suddenly record labels started "re-releasing" albums that were already doing well as a greedy means of maximize the hype even more. But the original purpose for the re-release to help struggling albums by correcting mistakes after the fact.