Sales on Steam are often pretty constant over some time and get big boosts when they have a sale. So I guess the game will sell a lot more over the next year.
I mean, it's at 114k sales on Steam now and if you look at the graph:
http://steamspy.com/app/460790
Then it seems to sell pretty good every single day and next weekend will give it probably a nice extra boost when more people have time to buy and download it.