I've just released mkinitcpio 0.14.0 into the wild which is a mix of bug fixes and new features. I wanted to point out that because of a fix for FS#34255, mkinitcpio will now report when *all* possible firmware cannot be found for a module.
Users with the "block" hook in their HOOKS may see warnings show up for missing firmware on some unfamiliar modules during creation of the fallback image. Please note that these are warnings *only* and can generally be ignored. Obviously, if you start seeing warnings about missing firmware your modules you do use, you'll appreciate this change.
New bugs can always be reported on https://bugs.archlinux.org.