Hello, a new image is up ready to be flashed at
https://wiki.mozilla.org/Hacking_b2g_on_Raspberry_Pi#Flash_an_existing_build
The major change in this image is that gecko and gaia are updated. Their
sha1's are now unfrozen in the RPi manifests. I'm not aware of any other
major new bugfixes or features that are relevant to the RPi since the last
image was posted.
Enjoy!
Cheers,
Chris