As a few other games have recently done, CABAL has looked at their earlier gameplay and made a few changes to the early content. In Reloaded, the developers have added three new dungeons targeted at those between levels 35 and 70, giving lower level players more options of game play. New quests have been added to the game as well, but those quests are more targeted towards endgame players, rather than midgame.
Other additions, such as skill books and a change to the party interface, adds more to the playability of the game than it changes how the game plays. For the full story on what's been added and changed, check out the full patch notes available on the North American forums.