Yes. Expansion-sized DLCs, as I've always said. New quests, new locations, more hours of gametime. 5 hours was probably an understatement back then, but I'm a relatively fast player who can play through the entirety of Arcanum in 10 hours. Case in point, Steam tells me I spent 24 hours in Age of Decadence, which I have played through 4 times, each time a different path through the game.
I guess you'll see what I mean later, when we unveil our gameworld and you can see the size of the different regions in the game.
What we want to do after the game's release is to work on expansions which each have the size of one major region in the game.
Anyway, announcing plans for multiple DLCs before your game is even released seems like a dumb move to me, that only tells me that I should wait with buying your game until all DLCs will be released, especially when we're talking about a no-name studio which is yet to prove its worth.
Since the expansion DLCs will be sizeable new regions with all-new content, you can buy the base game on release, play through it, save your game, buy the expansion DLC when it comes out a year later or so, load the savegame, and continue on with your old party, exploring a completely new area with its own independent content.
Nowhere have I mentioned simple add-in DLCs that somehow modify the base game.
Anyway, this discussion is rather pointless at this point since the only thing that we have in mind concerning expansions right now is "once our game is released, we'd like to work on other regions of the world and add them in as DLC/expansion packs".
There's no grand DLC milking plan or whatever you're imagining, we just love the world we've created for Realms Beyond and would like to explore other regions of it after the game has been released.