If that Allabolag page doesn't get you inspired, I don't know what will.... :D
http://www.dataspelsbranschen.se/media/134049/spelutvecklari... Swedish only sorry, page 6 & 7 for the numbers
We should see a good spike in Starbreeze's revenue as well as both Payday 2 and Brothers: A Tale of Two Sons have sold well and received good reviews.
I expect there will be a fair few mobile/casual game companies coming up once the devs over King start creating new companies. Candy Crush has been such as success that we will probably see more along that line in the future.