I guess I'll start. I talked to Flippfly and Ko-op Mode on Facebook and both showed interest in bringing their games to the store
Flippfly (Race The Sun)
We are looking into the IndieGameStand store for sure. It looks like they put in a ton of work into the new store and we could see it really taking off.
Ko-op Mode (Skipping Stones)
It's very likely we will be on the indiegamestand store if all goes well!
Also Klei is aware of the store and will be keeping "an eye on it." They're focused on Humble and Steam right now, but Incognita could come to the store next year
We're not really sure where it will end up until much later in 2014.