The theory behind this is interesting and worth reading up on, but for QA, our job is simply to test it and make sure it does what it says on the tin. Our friends at Dell, particularly Narendra K., have worked really hard to make sure it's easy to help out with testing; there's a simple script to run to see if you have affected hardware, and very detailed instructions on testing. This change will land in most Linux distributions in future, so even if you're not a Fedora user, it's probably a good idea to have a look at the test cases and try it out on your system, so you know what's coming and so you can help us get any bugs fixed before they land in your favourite distribution! You've no excuse - go and visit the Test Day page now.
The first Test Day for Fedora 15 is coming up on Thursday - 2011-01-27 - and it's a big one! The subject is network device naming, but before you doze off, it's more significant than you might be thinking. On some systems, good ol' familar eth0 will be gone in Fedora 15, replaced by...em1? Get used to it! PCI network adapter naming will also change on supported systems.