User blog comment:The king of war/The Beta/@comment-1992639-20120619214000

Maybe Heartfire will introduce the change of foliage and seasons as we saw in the game-jam demo, as heartfire as the name of one of the months of the year. Possible re-do the alchemy system to make certain ingredients grow during certain times of the year and perhaps making certain quests season-dependable, perhaps finally tier based so that more common ingredients pack less effect.

Remember that not every DLC has to be equally big and some DLC's may merely by a pack of features, an in-between to not let Skyrim grow forgotten. A bit like how EA and many other large companies with its games releases a small content DLC between two big DLC's to keep people occupied.

I certainly don't expect every DLC to be as big as Dawnguard, as it would be silly to release only one DLC every year or so. Remember that Dawnguard holds a lot of unfinished or pre-worked content (Vampire Lords, Lycan skill trees, higher level mobs with new looks etc). A next big DLC may take longer to finish.