Hi,
Just found this
http://steamcommunity.com/greenlight/

it seems there is a new way to get your produkts to steam.
On GreenLight you can register your project(even in VERY early stages). You can even share Videos, Screens and early builds of your project

The community can vote your projekt. With this system, you can get the required public attention to get your game on steam.

i havent investigated any further into this system, but it definetly sounds very interesting for small/indie developers to get somewhere started.

Greetings
Rackscha