As pointed out on Phoronix, there’s a new blog post by Peter Jones of Red Hat on the status of firmware updates on Linux.
http://blog.uncooperative.org/blog/2015/09/16/an-update-on-firmware-updates/
Phoronix has been covering this much better than I have:
http://www.phoronix.com/scan.php?page=search&q=ESRT
http://www.phoronix.com/scan.php?page=search&q=fwupd
http://www.phoronix.com/scan.php?page=news_item&px=Linux-UEFI-Firmware-Sept
