We have just updated the released alchemist repository. This is the same content that was pushed to alchemist_beta last week.
The changes include an updated NVIDIA driver, updated branding, and the latest security updates.
Note that older NVIDIA video cards (G8x, G9x, and GT2xx GPUs, and motherboard chipsets based on them) are no longer supported by this NVIDIA driver, and therefore will NOT work with SteamOS
Updated SteamOS installers and and updated image are available at with the following MD5 signatures: