Valve has updated SteamOS beta which brings better support for wireless cards. If you are running beta of SteamOS you will be getting these updates. Those who are using stable version may change to beta version to get advantage of these packages. The update adds additional packages to the repo to support gdb, NFS, and creating an alchemist chroot. As I said above it also pre-installs all the needed firmware packages to enable supporting more wireless network adapters. It has added steamos-updatelevel dummy package; the company says its version is guaranteed to increase with every new update. With this version Steam developers have updated e2fsprogs, iptables, libdrm, debootstrap, initramfs-tools, curl, libav, eglibc to incorporate upstream Debian fixes.