A Phoronix reader pointed out to us today that a Valve developer, Sam Lantinga, who is particularly known for his work on SDL, has been working to port Kodi to the Steam Link via their open-source SDK.
There is also this Steam Community thread about the port, which seems to indicate it's still very much a work-in-progress and isn't yet ready for end-users. With the current code, Kodi is running painfully slow on the Steam Link due to Kodi not yet supporting video hardware acceleration on the device.
The Steam Link is powered by a single-core ARMv7 CPU at 1GHz, has about 256MB of available RAM, and 500MB of usable flash storage. So even if video acceleration does come about, the Steam Link won't be the best choice for a HTPC box unless you plan on streaming all of your content. Nevertheless, it's an interesting port with the Steam Link selling for just $50 USD.