iConsole.tv isn't an official Steam Machine, per the list of Valve's 12+ hardware partners, but they are sending out secondary hard drives that contain SteamOS for those using their "Unit 00" kit. New consoles will ship with dual drives: one for Android, one for SteamOS.
Christopher Price of iConsole.tv wrote in an email to Phoronix, "Just before departing for CES, we announced that we are shipping second hard drives to our entire fleet of developers using our iConsole.tv Developer Kits, Unit 00. We have done this to add formal support on our end for SteamOS. Game developers can now dual-boot SteamOS and Android on one development platform. We achieve this support by assisting our developers with installing the drive, and then walking them through installing SteamOS. Our developer relations team personally assists each developer set up SteamOS on their Unit 00. While we are not currently a Valve partner (as you may have noticed from today’s news), we’re certainly continuing the conversation."
Public confirmation of iConsole.tv being upgraded with SteamOS support can be found via this blog post.
The iConsole.tv Android + SteamOS game console ships with an overclocked Intel Haswell CPU with Iris Graphics, 8GB of RAM, dual Gigabit Ethernet, 802.11n WiFi, and dual 500GB hard drives. There is no word yet on pricing once this dual-OS living room console reaches production, which is supposedly sometime soon.