Here are the Chromebook models that will support Steam for Chrome OS at launch - Android Police

1. Here are the Chromebook models that will support Steam for Chrome OS at launch  Android Police
2. HP and Lenovo Chromebooks expected to support Steam  Ars Technica
3. These Chromebooks will support Steam for Chrome OS at launch  XDA Developers
4. Chrome OS code change reveals initial list of Chromebooks getting Steam  MobileSyrup